diff --git a/app/keepers/keepers.go b/app/keepers/keepers.go
index 45c5b7a3..d29029e5 100644
--- a/app/keepers/keepers.go
+++ b/app/keepers/keepers.go
@@ -474,6 +474,7 @@ func NewTerraAppKeepers(
 	keepers.SmartAccountKeeper = smartaccountkeeper.NewKeeper(
 		appCodec,
 		keys[smartaccounttypes.StoreKey],
+		keepers.WasmKeeper.Keeper,
 	)
 
 	keepers.Ics20WasmHooks.ContractKeeper = keepers.WasmKeeper.Keeper
diff --git a/integration-tests/src/contracts/limit_send_only_hooks.wasm b/integration-tests/src/contracts/limit_send_only_hooks.wasm
deleted file mode 100644
index b58d3962..00000000
Binary files a/integration-tests/src/contracts/limit_send_only_hooks.wasm and /dev/null differ
diff --git a/integration-tests/src/contracts/smart_auth_contract.wasm b/integration-tests/src/contracts/smart_auth_contract.wasm
deleted file mode 100644
index 538a5763..00000000
Binary files a/integration-tests/src/contracts/smart_auth_contract.wasm and /dev/null differ
diff --git a/integration-tests/src/modules/smartaccount/smartaccount.test.ts b/integration-tests/src/modules/smartaccount/smartaccount.test.ts
index b90a77b5..c9c1fe72 100644
--- a/integration-tests/src/modules/smartaccount/smartaccount.test.ts
+++ b/integration-tests/src/modules/smartaccount/smartaccount.test.ts
@@ -17,6 +17,7 @@ describe("Smartaccount Module (https://github.com/terra-money/core/tree/release/
 
     // TODO: convert pubkey to base64 string similar to golang pubkey.Bytes()
     const pubkeybb = pubkey as PublicKey
+    
     const ggg = pubkeybb.toAmino()
 
     const key = ggg.value as string;
@@ -42,7 +43,7 @@ describe("Smartaccount Module (https://github.com/terra-money/core/tree/release/
             let tx = await deployer.createAndSignTx({
                 msgs: [new MsgStoreCode(
                     deployerAddress,
-                    fs.readFileSync(path.join(__dirname, "/../../contracts/smart_auth_contract.wasm")).toString("base64"),
+                    fs.readFileSync(path.join(__dirname, "/../../x/smartaccount/test_helpers/test_data/smart_auth_contract.wasm")).toString("base64"),
                 )],
                 chainID: "test-1",
             });
diff --git a/proto/terra/smartaccount/v1/setting.proto b/proto/terra/smartaccount/v1/setting.proto
index f8df537b..345792d1 100644
--- a/proto/terra/smartaccount/v1/setting.proto
+++ b/proto/terra/smartaccount/v1/setting.proto
@@ -3,6 +3,7 @@ package terra.smartaccount.v1;
 
 import "gogoproto/gogo.proto";
 import "cosmos_proto/cosmos.proto";
+import "terra/smartaccount/v1/wasm.proto";
 
 option go_package = "github.com/terra-money/core/v2/x/smartaccount/types";
 
@@ -26,5 +27,5 @@ message Setting {
 
 message AuthorizationMsg {
     string contract_address = 1;
-    string init_msg = 2;
+    Initialization init_msg = 2;
 }
\ No newline at end of file
diff --git a/proto/terra/smartaccount/v1/wasm.proto b/proto/terra/smartaccount/v1/wasm.proto
new file mode 100644
index 00000000..28b063c7
--- /dev/null
+++ b/proto/terra/smartaccount/v1/wasm.proto
@@ -0,0 +1,15 @@
+syntax = "proto3";
+package terra.smartaccount.v1;
+
+import "gogoproto/gogo.proto";
+
+option go_package = "github.com/terra-money/core/v2/x/smartaccount/types";
+
+message Initialization {
+    repeated string senders = 1 [(gogoproto.jsontag) = "senders"];
+    string account = 2 [(gogoproto.jsontag) = "account"];
+    bytes msg = 3 [(gogoproto.jsontag) = "msg"];
+}
+
+
+
diff --git a/x/smartaccount/ante/tests/auth_test.go b/x/smartaccount/ante/tests/auth_test.go
index 4c86320f..1156397d 100644
--- a/x/smartaccount/ante/tests/auth_test.go
+++ b/x/smartaccount/ante/tests/auth_test.go
@@ -55,7 +55,7 @@ func (s *AnteTestSuite) TestAuthAnteHandler() {
 
 	// create initMsg
 	initMsg := smartaccounttypes.Initialization{
-		Sender:  acc.String(),
+		Senders: []string{},
 		Account: acc.String(),
 		Msg:     pkEncoded,
 	}
@@ -69,7 +69,7 @@ func (s *AnteTestSuite) TestAuthAnteHandler() {
 	// set settings
 	authMsg := &smartaccounttypes.AuthorizationMsg{
 		ContractAddress: contractAddr.String(),
-		InitMsg:         string(sudoInitMsgBs),
+		InitMsg:         sudoInitMsg.Initialization,
 	}
 	err = s.SmartAccountKeeper.SetSetting(s.Ctx, smartaccounttypes.Setting{
 		Owner:         acc.String(),
diff --git a/x/smartaccount/keeper/msg_server.go b/x/smartaccount/keeper/msg_server.go
index 08e0e1ea..bcddf92b 100644
--- a/x/smartaccount/keeper/msg_server.go
+++ b/x/smartaccount/keeper/msg_server.go
@@ -43,8 +43,6 @@ func (ms MsgServer) UpdateAuthorization(
 ) (*types.MsgUpdateAuthorizationResponse, error) {
 	ctx := sdk.UnwrapSDKContext(goCtx)
 
-	// TODO: Run through the authorization messages and check if they are valid
-	// Should be either done here or the auth ante handler
 	setting, err := ms.k.GetSetting(ctx, msg.Account)
 	if sdkerrors.ErrKeyNotFound.Is(err) {
 		setting = &types.Setting{
@@ -56,24 +54,7 @@ func (ms MsgServer) UpdateAuthorization(
 	setting.Authorization = msg.AuthorizationMsgs
 	// TODO: check if this is right
 	for _, auth := range msg.AuthorizationMsgs {
-		if auth.ContractAddress == "" {
-			return nil, sdkerrors.ErrInvalidRequest.Wrapf("contract address cannot be empty")
-		}
-		if auth.InitMsg == "" {
-			return nil, sdkerrors.ErrInvalidRequest.Wrapf("init msg cannot be empty")
-		}
-		var sudoMsg types.SudoMsg
-		err := json.Unmarshal([]byte(auth.InitMsg), &sudoMsg)
-		if err != nil {
-			return nil, sdkerrors.ErrInvalidRequest.Wrapf("failed to unmarshal auth msg: %s", err)
-		}
-
-		initMsg := types.Initialization{
-			Sender:  sudoMsg.Authorization.Senders[0],
-			Account: sudoMsg.Authorization.Senders[0],
-			Msg:     sudoMsg.Authorization.Data,
-		}
-		sudoInitMsg := types.SudoMsg{Initialization: &initMsg}
+		sudoInitMsg := types.SudoMsg{Initialization: auth.InitMsg}
 		sudoInitMsgBs, err := json.Marshal(sudoInitMsg)
 		if err != nil {
 			return nil, err
diff --git a/x/smartaccount/keeper/msg_server_test.go b/x/smartaccount/keeper/msg_server_test.go
index 3ae7c902..3f7a8fcc 100644
--- a/x/smartaccount/keeper/msg_server_test.go
+++ b/x/smartaccount/keeper/msg_server_test.go
@@ -51,7 +51,7 @@ func (s *IntegrationTestSuite) TestMsgUpdateAuthorization() {
 	// update authorization
 	authorization := types.AuthorizationMsg{
 		ContractAddress: "abc",
-		InitMsg:         "abc",
+		InitMsg:         &types.Initialization{},
 	}
 	msgUpdate := types.NewMsgUpdateAuthorization(sender.String(), []*types.AuthorizationMsg{&authorization}, true)
 	_, err = ms.UpdateAuthorization(s.Ctx, msgUpdate)
@@ -66,7 +66,7 @@ func (s *IntegrationTestSuite) TestMsgUpdateAuthorization() {
 	// update authorization again
 	authorization2 := types.AuthorizationMsg{
 		ContractAddress: "bbc",
-		InitMsg:         "bbc",
+		InitMsg:         &types.Initialization{},
 	}
 	msgUpdate2 := types.NewMsgUpdateAuthorization(sender.String(), []*types.AuthorizationMsg{&authorization2}, true)
 	_, err = ms.UpdateAuthorization(s.Ctx, msgUpdate2)
diff --git a/x/smartaccount/test_helpers/test_data/smart_auth_contract.wasm b/x/smartaccount/test_helpers/test_data/smart_auth_contract.wasm
index 538a5763..2e5c0fc9 100644
Binary files a/x/smartaccount/test_helpers/test_data/smart_auth_contract.wasm and b/x/smartaccount/test_helpers/test_data/smart_auth_contract.wasm differ
diff --git a/x/smartaccount/types/expected_keepers.go b/x/smartaccount/types/expected_keepers.go
index 27d2ac26..228c93a4 100644
--- a/x/smartaccount/types/expected_keepers.go
+++ b/x/smartaccount/types/expected_keepers.go
@@ -1,8 +1,6 @@
 package types
 
 import (
-	wasmtypes "github.com/CosmWasm/wasmd/x/wasm/types"
-
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	acctypes "github.com/cosmos/cosmos-sdk/x/auth/types"
 )
@@ -27,6 +25,5 @@ type BankKeeper interface {
 
 // WasmKeeper defines the expected interface needed to retrieve cosmwasm contracts.
 type WasmKeeper interface {
-	GetContractInfo(ctx sdk.Context, contractAddr sdk.AccAddress) (wasmtypes.ContractInfo, error)
 	Sudo(ctx sdk.Context, contractAddress sdk.AccAddress, msg []byte) ([]byte, error)
 }
diff --git a/x/smartaccount/types/setting.pb.go b/x/smartaccount/types/setting.pb.go
index 62f1a252..4dbfc532 100644
--- a/x/smartaccount/types/setting.pb.go
+++ b/x/smartaccount/types/setting.pb.go
@@ -107,8 +107,8 @@ func (m *Setting) GetFallback() bool {
 }
 
 type AuthorizationMsg struct {
-	ContractAddress string `protobuf:"bytes,1,opt,name=contract_address,json=contractAddress,proto3" json:"contract_address,omitempty"`
-	InitMsg         string `protobuf:"bytes,2,opt,name=init_msg,json=initMsg,proto3" json:"init_msg,omitempty"`
+	ContractAddress string          `protobuf:"bytes,1,opt,name=contract_address,json=contractAddress,proto3" json:"contract_address,omitempty"`
+	InitMsg         *Initialization `protobuf:"bytes,2,opt,name=init_msg,json=initMsg,proto3" json:"init_msg,omitempty"`
 }
 
 func (m *AuthorizationMsg) Reset()         { *m = AuthorizationMsg{} }
@@ -151,11 +151,11 @@ func (m *AuthorizationMsg) GetContractAddress() string {
 	return ""
 }
 
-func (m *AuthorizationMsg) GetInitMsg() string {
+func (m *AuthorizationMsg) GetInitMsg() *Initialization {
 	if m != nil {
 		return m.InitMsg
 	}
-	return ""
+	return nil
 }
 
 func init() {
@@ -168,30 +168,32 @@ func init() {
 }
 
 var fileDescriptor_8b1bfc9d01b712f3 = []byte{
-	// 361 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x84, 0x92, 0xc1, 0x4e, 0x02, 0x31,
-	0x10, 0x40, 0x59, 0x10, 0xc1, 0x1a, 0x85, 0x6c, 0x30, 0x59, 0x38, 0x6c, 0x36, 0x78, 0x10, 0x0f,
-	0x6c, 0x03, 0x7c, 0x01, 0x7a, 0xe6, 0x02, 0x1e, 0x8c, 0x97, 0x4d, 0x29, 0xb5, 0x6c, 0x64, 0xdb,
-	0x4d, 0x3b, 0xa0, 0xf8, 0x15, 0x7e, 0x8c, 0xdf, 0x60, 0x3c, 0x12, 0x4f, 0x1e, 0x0d, 0xfc, 0x88,
-	0xd9, 0x2d, 0x2a, 0x18, 0x83, 0xb7, 0x4e, 0xe7, 0xf5, 0xcd, 0x74, 0x5a, 0x74, 0x0a, 0x4c, 0x29,
-	0x82, 0x75, 0x44, 0x14, 0x10, 0x4a, 0xe5, 0x54, 0x00, 0x9e, 0xb5, 0xb0, 0x66, 0x00, 0xa1, 0xe0,
-	0x7e, 0xac, 0x24, 0x48, 0xfb, 0x24, 0x85, 0xfc, 0x4d, 0xc8, 0x9f, 0xb5, 0x6a, 0x15, 0x2e, 0xb9,
-	0x4c, 0x09, 0x9c, 0xac, 0x0c, 0x5c, 0xab, 0x52, 0xa9, 0x23, 0xa9, 0x03, 0x93, 0x30, 0x81, 0x49,
-	0xd5, 0x5f, 0xb2, 0xa8, 0x30, 0x30, 0x66, 0xdb, 0x47, 0x79, 0x79, 0x2f, 0x98, 0x72, 0x2c, 0xcf,
-	0x6a, 0x1c, 0x5c, 0x38, 0x6f, 0xcf, 0xcd, 0xca, 0x1a, 0xee, 0x8e, 0x46, 0x8a, 0x69, 0x3d, 0x00,
-	0x15, 0x0a, 0xde, 0x37, 0x98, 0xcd, 0xd1, 0x11, 0x99, 0xc2, 0x58, 0xaa, 0xf0, 0x91, 0x40, 0x28,
-	0x85, 0x93, 0xf5, 0x72, 0x8d, 0xc3, 0xf6, 0x99, 0xff, 0x67, 0x6f, 0x7e, 0x77, 0x93, 0xed, 0x69,
-	0xbe, 0xa3, 0xc0, 0xb6, 0xd7, 0xee, 0xa2, 0x52, 0xac, 0x58, 0x00, 0x8a, 0x08, 0x4d, 0x68, 0x5a,
-	0x2a, 0xe7, 0xe5, 0x76, 0xb6, 0x78, 0x1c, 0x2b, 0x76, 0xf5, 0xc3, 0xdb, 0x97, 0xa8, 0x1c, 0x4b,
-	0x0d, 0x5b, 0x8e, 0xbd, 0x7f, 0x1c, 0xa5, 0xe4, 0xc4, 0xa6, 0xa4, 0x86, 0x8a, 0xb7, 0x64, 0x32,
-	0x19, 0x12, 0x7a, 0xe7, 0xe4, 0x3d, 0xab, 0x51, 0xec, 0x7f, 0xc7, 0xf5, 0x6b, 0x54, 0xfe, 0x7d,
-	0x41, 0xfb, 0x1c, 0x95, 0xa9, 0x14, 0xa0, 0x08, 0x85, 0x80, 0x18, 0xb5, 0x99, 0x6d, 0xbf, 0xf4,
-	0xb5, 0xbf, 0xae, 0x68, 0x57, 0x51, 0x31, 0x14, 0x21, 0x04, 0x91, 0xe6, 0x4e, 0x36, 0x45, 0x0a,
-	0x49, 0x9c, 0x8c, 0xa9, 0xf7, 0xba, 0x74, 0xad, 0xc5, 0xd2, 0xb5, 0x3e, 0x96, 0xae, 0xf5, 0xb4,
-	0x72, 0x33, 0x8b, 0x95, 0x9b, 0x79, 0x5f, 0xb9, 0x99, 0x9b, 0x0e, 0x0f, 0x61, 0x3c, 0x1d, 0xfa,
-	0x54, 0x46, 0x38, 0x9d, 0x79, 0x33, 0x92, 0x82, 0xcd, 0x31, 0x95, 0x8a, 0xe1, 0x59, 0x1b, 0x3f,
-	0x6c, 0x7f, 0x22, 0x98, 0xc7, 0x4c, 0x0f, 0xf7, 0xd3, 0x87, 0xef, 0x7c, 0x06, 0x00, 0x00, 0xff,
-	0xff, 0x52, 0x18, 0x83, 0xa4, 0x67, 0x02, 0x00, 0x00,
+	// 389 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x84, 0x92, 0xc1, 0xae, 0xd2, 0x40,
+	0x14, 0x86, 0x29, 0x88, 0xe0, 0x10, 0x85, 0x34, 0x98, 0x54, 0x16, 0x4d, 0x83, 0x31, 0xd6, 0x05,
+	0x9d, 0x00, 0x2f, 0x20, 0xba, 0x72, 0xc1, 0xa6, 0xb8, 0x72, 0xd3, 0x0c, 0xc3, 0x38, 0x4c, 0xa4,
+	0x33, 0xcd, 0xcc, 0x01, 0xc4, 0x8d, 0xaf, 0xe0, 0xc3, 0xf8, 0x0c, 0xc6, 0x25, 0x71, 0xe5, 0xd2,
+	0xc0, 0x8b, 0x98, 0x76, 0xaa, 0x17, 0x6e, 0xb8, 0xdc, 0x5d, 0xa7, 0xf3, 0x9d, 0xef, 0x3f, 0x73,
+	0x72, 0xd0, 0x73, 0x60, 0x5a, 0x13, 0x6c, 0x52, 0xa2, 0x81, 0x50, 0xaa, 0xd6, 0x12, 0xf0, 0x66,
+	0x88, 0x0d, 0x03, 0x10, 0x92, 0x47, 0x99, 0x56, 0xa0, 0xdc, 0xa7, 0x05, 0x14, 0x9d, 0x42, 0xd1,
+	0x66, 0xd8, 0xeb, 0x72, 0xc5, 0x55, 0x41, 0xe0, 0xfc, 0xcb, 0xc2, 0xbd, 0x67, 0x54, 0x99, 0x54,
+	0x99, 0xc4, 0x5e, 0xd8, 0x43, 0x79, 0x15, 0x5c, 0x0e, 0xdb, 0x12, 0x93, 0x5a, 0xa2, 0xff, 0xa3,
+	0x8a, 0x1a, 0x33, 0x9b, 0xed, 0x46, 0xa8, 0xae, 0xb6, 0x92, 0x69, 0xcf, 0x09, 0x9c, 0xf0, 0xd1,
+	0x1b, 0xef, 0xd7, 0xf7, 0x41, 0xb7, 0xd4, 0x4d, 0x16, 0x0b, 0xcd, 0x8c, 0x99, 0x81, 0x16, 0x92,
+	0xc7, 0x16, 0x73, 0x39, 0x7a, 0x4c, 0xd6, 0xb0, 0x54, 0x5a, 0x7c, 0x21, 0x20, 0x94, 0xf4, 0xaa,
+	0x41, 0x2d, 0x6c, 0x8d, 0x5e, 0x46, 0x17, 0xbb, 0x8f, 0x26, 0xa7, 0xec, 0xd4, 0xf0, 0x2b, 0x01,
+	0xe7, 0x5e, 0x77, 0x82, 0xda, 0x99, 0x66, 0x09, 0x68, 0x22, 0x0d, 0xa1, 0x45, 0x54, 0x2d, 0xa8,
+	0x5d, 0x6d, 0xf1, 0x49, 0xa6, 0xd9, 0xfb, 0x1b, 0xde, 0x7d, 0x8b, 0x3a, 0x99, 0x32, 0x70, 0xe6,
+	0x78, 0x70, 0x8f, 0xa3, 0x9d, 0x57, 0x9c, 0x4a, 0x7a, 0xa8, 0xf9, 0x91, 0xac, 0x56, 0x73, 0x42,
+	0x3f, 0x79, 0xf5, 0xc0, 0x09, 0x9b, 0xf1, 0xff, 0x73, 0xff, 0x2b, 0xea, 0xdc, 0x7e, 0xa0, 0xfb,
+	0x0a, 0x75, 0xa8, 0x92, 0xa0, 0x09, 0x85, 0x84, 0x58, 0xb5, 0x9d, 0x6d, 0xdc, 0xfe, 0xf7, 0xbf,
+	0x4c, 0x74, 0x5f, 0xa3, 0xa6, 0x90, 0x02, 0x92, 0xd4, 0x70, 0xaf, 0x1a, 0x38, 0x61, 0x6b, 0xf4,
+	0xe2, 0x8e, 0x31, 0xbe, 0x93, 0x02, 0x04, 0x59, 0x95, 0x31, 0x71, 0x23, 0x2f, 0xcb, 0xa7, 0x39,
+	0xfd, 0x79, 0xf0, 0x9d, 0xfd, 0xc1, 0x77, 0xfe, 0x1c, 0x7c, 0xe7, 0xdb, 0xd1, 0xaf, 0xec, 0x8f,
+	0x7e, 0xe5, 0xf7, 0xd1, 0xaf, 0x7c, 0x18, 0x73, 0x01, 0xcb, 0xf5, 0x3c, 0xa2, 0x2a, 0xc5, 0x85,
+	0x73, 0x90, 0x2a, 0xc9, 0x76, 0x98, 0x2a, 0xcd, 0xf0, 0x66, 0x84, 0x3f, 0x9f, 0x2f, 0x08, 0xec,
+	0x32, 0x66, 0xe6, 0x0f, 0x8b, 0xfd, 0x18, 0xff, 0x0d, 0x00, 0x00, 0xff, 0xff, 0x31, 0x83, 0xf3,
+	0x31, 0xb0, 0x02, 0x00, 0x00,
 }
 
 func (m *Setting) Marshal() (dAtA []byte, err error) {
@@ -286,10 +288,15 @@ func (m *AuthorizationMsg) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
-	if len(m.InitMsg) > 0 {
-		i -= len(m.InitMsg)
-		copy(dAtA[i:], m.InitMsg)
-		i = encodeVarintSetting(dAtA, i, uint64(len(m.InitMsg)))
+	if m.InitMsg != nil {
+		{
+			size, err := m.InitMsg.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintSetting(dAtA, i, uint64(size))
+		}
 		i--
 		dAtA[i] = 0x12
 	}
@@ -358,8 +365,8 @@ func (m *AuthorizationMsg) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovSetting(uint64(l))
 	}
-	l = len(m.InitMsg)
-	if l > 0 {
+	if m.InitMsg != nil {
+		l = m.InitMsg.Size()
 		n += 1 + l + sovSetting(uint64(l))
 	}
 	return n
@@ -636,7 +643,7 @@ func (m *AuthorizationMsg) Unmarshal(dAtA []byte) error {
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field InitMsg", wireType)
 			}
-			var stringLen uint64
+			var msglen int
 			for shift := uint(0); ; shift += 7 {
 				if shift >= 64 {
 					return ErrIntOverflowSetting
@@ -646,23 +653,27 @@ func (m *AuthorizationMsg) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				stringLen |= uint64(b&0x7F) << shift
+				msglen |= int(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
 			}
-			intStringLen := int(stringLen)
-			if intStringLen < 0 {
+			if msglen < 0 {
 				return ErrInvalidLengthSetting
 			}
-			postIndex := iNdEx + intStringLen
+			postIndex := iNdEx + msglen
 			if postIndex < 0 {
 				return ErrInvalidLengthSetting
 			}
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			m.InitMsg = string(dAtA[iNdEx:postIndex])
+			if m.InitMsg == nil {
+				m.InitMsg = &Initialization{}
+			}
+			if err := m.InitMsg.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
 			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
diff --git a/x/smartaccount/types/wasm.go b/x/smartaccount/types/wasm.go
index 804078b5..49e6621c 100644
--- a/x/smartaccount/types/wasm.go
+++ b/x/smartaccount/types/wasm.go
@@ -9,12 +9,6 @@ type SudoMsg struct {
 	PostTransaction *PostTransaction `json:"post_transaction,omitempty"`
 }
 
-type Initialization struct {
-	Sender  string `json:"sender"`
-	Account string `json:"account"`
-	Msg     []byte `json:"msg"`
-}
-
 type Authorization struct {
 	Senders     []string `json:"senders"`
 	Account     string   `json:"account"`
diff --git a/x/smartaccount/types/wasm.pb.go b/x/smartaccount/types/wasm.pb.go
new file mode 100644
index 00000000..08587e78
--- /dev/null
+++ b/x/smartaccount/types/wasm.pb.go
@@ -0,0 +1,428 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: terra/smartaccount/v1/wasm.proto
+
+package types
+
+import (
+	fmt "fmt"
+	_ "github.com/cosmos/gogoproto/gogoproto"
+	proto "github.com/cosmos/gogoproto/proto"
+	io "io"
+	math "math"
+	math_bits "math/bits"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
+
+type Initialization struct {
+	Senders []string `protobuf:"bytes,1,rep,name=senders,proto3" json:"senders"`
+	Account string   `protobuf:"bytes,2,opt,name=account,proto3" json:"account"`
+	Msg     []byte   `protobuf:"bytes,3,opt,name=msg,proto3" json:"msg"`
+}
+
+func (m *Initialization) Reset()         { *m = Initialization{} }
+func (m *Initialization) String() string { return proto.CompactTextString(m) }
+func (*Initialization) ProtoMessage()    {}
+func (*Initialization) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0cff19e26b95f6af, []int{0}
+}
+func (m *Initialization) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *Initialization) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_Initialization.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *Initialization) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Initialization.Merge(m, src)
+}
+func (m *Initialization) XXX_Size() int {
+	return m.Size()
+}
+func (m *Initialization) XXX_DiscardUnknown() {
+	xxx_messageInfo_Initialization.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Initialization proto.InternalMessageInfo
+
+func (m *Initialization) GetSenders() []string {
+	if m != nil {
+		return m.Senders
+	}
+	return nil
+}
+
+func (m *Initialization) GetAccount() string {
+	if m != nil {
+		return m.Account
+	}
+	return ""
+}
+
+func (m *Initialization) GetMsg() []byte {
+	if m != nil {
+		return m.Msg
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterType((*Initialization)(nil), "terra.smartaccount.v1.Initialization")
+}
+
+func init() { proto.RegisterFile("terra/smartaccount/v1/wasm.proto", fileDescriptor_0cff19e26b95f6af) }
+
+var fileDescriptor_0cff19e26b95f6af = []byte{
+	// 235 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x52, 0x28, 0x49, 0x2d, 0x2a,
+	0x4a, 0xd4, 0x2f, 0xce, 0x4d, 0x2c, 0x2a, 0x49, 0x4c, 0x4e, 0xce, 0x2f, 0xcd, 0x2b, 0xd1, 0x2f,
+	0x33, 0xd4, 0x2f, 0x4f, 0x2c, 0xce, 0xd5, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0x12, 0x05, 0xab,
+	0xd0, 0x43, 0x56, 0xa1, 0x57, 0x66, 0x28, 0x25, 0x92, 0x9e, 0x9f, 0x9e, 0x0f, 0x56, 0xa1, 0x0f,
+	0x62, 0x41, 0x14, 0x2b, 0x55, 0x72, 0xf1, 0x79, 0xe6, 0x65, 0x96, 0x64, 0x26, 0xe6, 0x64, 0x56,
+	0x25, 0x96, 0x64, 0xe6, 0xe7, 0x09, 0xa9, 0x72, 0xb1, 0x17, 0xa7, 0xe6, 0xa5, 0xa4, 0x16, 0x15,
+	0x4b, 0x30, 0x2a, 0x30, 0x6b, 0x70, 0x3a, 0x71, 0xbf, 0xba, 0x27, 0x0f, 0x13, 0x0a, 0x82, 0x31,
+	0x40, 0xca, 0xa0, 0x86, 0x4b, 0x30, 0x29, 0x30, 0xc2, 0x94, 0x41, 0x85, 0x82, 0x60, 0x0c, 0x21,
+	0x49, 0x2e, 0xe6, 0xdc, 0xe2, 0x74, 0x09, 0x66, 0x05, 0x46, 0x0d, 0x1e, 0x27, 0xf6, 0x57, 0xf7,
+	0xe4, 0x41, 0xdc, 0x20, 0x10, 0xe1, 0xe4, 0x7b, 0xe2, 0x91, 0x1c, 0xe3, 0x85, 0x47, 0x72, 0x8c,
+	0x0f, 0x1e, 0xc9, 0x31, 0x4e, 0x78, 0x2c, 0xc7, 0x70, 0xe1, 0xb1, 0x1c, 0xc3, 0x8d, 0xc7, 0x72,
+	0x0c, 0x51, 0xc6, 0xe9, 0x99, 0x25, 0x19, 0xa5, 0x49, 0x7a, 0xc9, 0xf9, 0xb9, 0xfa, 0x60, 0xcf,
+	0xe8, 0xe6, 0xe6, 0xe7, 0xa5, 0x56, 0xea, 0x27, 0xe7, 0x17, 0xa5, 0xea, 0x97, 0x19, 0xe9, 0x57,
+	0xa0, 0x7a, 0xbf, 0xa4, 0xb2, 0x20, 0xb5, 0x38, 0x89, 0x0d, 0xec, 0x21, 0x63, 0x40, 0x00, 0x00,
+	0x00, 0xff, 0xff, 0xa2, 0x09, 0x7f, 0x86, 0x21, 0x01, 0x00, 0x00,
+}
+
+func (m *Initialization) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *Initialization) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *Initialization) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.Msg) > 0 {
+		i -= len(m.Msg)
+		copy(dAtA[i:], m.Msg)
+		i = encodeVarintWasm(dAtA, i, uint64(len(m.Msg)))
+		i--
+		dAtA[i] = 0x1a
+	}
+	if len(m.Account) > 0 {
+		i -= len(m.Account)
+		copy(dAtA[i:], m.Account)
+		i = encodeVarintWasm(dAtA, i, uint64(len(m.Account)))
+		i--
+		dAtA[i] = 0x12
+	}
+	if len(m.Senders) > 0 {
+		for iNdEx := len(m.Senders) - 1; iNdEx >= 0; iNdEx-- {
+			i -= len(m.Senders[iNdEx])
+			copy(dAtA[i:], m.Senders[iNdEx])
+			i = encodeVarintWasm(dAtA, i, uint64(len(m.Senders[iNdEx])))
+			i--
+			dAtA[i] = 0xa
+		}
+	}
+	return len(dAtA) - i, nil
+}
+
+func encodeVarintWasm(dAtA []byte, offset int, v uint64) int {
+	offset -= sovWasm(v)
+	base := offset
+	for v >= 1<<7 {
+		dAtA[offset] = uint8(v&0x7f | 0x80)
+		v >>= 7
+		offset++
+	}
+	dAtA[offset] = uint8(v)
+	return base
+}
+func (m *Initialization) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if len(m.Senders) > 0 {
+		for _, s := range m.Senders {
+			l = len(s)
+			n += 1 + l + sovWasm(uint64(l))
+		}
+	}
+	l = len(m.Account)
+	if l > 0 {
+		n += 1 + l + sovWasm(uint64(l))
+	}
+	l = len(m.Msg)
+	if l > 0 {
+		n += 1 + l + sovWasm(uint64(l))
+	}
+	return n
+}
+
+func sovWasm(x uint64) (n int) {
+	return (math_bits.Len64(x|1) + 6) / 7
+}
+func sozWasm(x uint64) (n int) {
+	return sovWasm(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+}
+func (m *Initialization) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowWasm
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: Initialization: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: Initialization: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Senders", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowWasm
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthWasm
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthWasm
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Senders = append(m.Senders, string(dAtA[iNdEx:postIndex]))
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Account", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowWasm
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthWasm
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthWasm
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Account = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 3:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Msg", wireType)
+			}
+			var byteLen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowWasm
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				byteLen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if byteLen < 0 {
+				return ErrInvalidLengthWasm
+			}
+			postIndex := iNdEx + byteLen
+			if postIndex < 0 {
+				return ErrInvalidLengthWasm
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Msg = append(m.Msg[:0], dAtA[iNdEx:postIndex]...)
+			if m.Msg == nil {
+				m.Msg = []byte{}
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipWasm(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthWasm
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func skipWasm(dAtA []byte) (n int, err error) {
+	l := len(dAtA)
+	iNdEx := 0
+	depth := 0
+	for iNdEx < l {
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return 0, ErrIntOverflowWasm
+			}
+			if iNdEx >= l {
+				return 0, io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		wireType := int(wire & 0x7)
+		switch wireType {
+		case 0:
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowWasm
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				iNdEx++
+				if dAtA[iNdEx-1] < 0x80 {
+					break
+				}
+			}
+		case 1:
+			iNdEx += 8
+		case 2:
+			var length int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowWasm
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				length |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if length < 0 {
+				return 0, ErrInvalidLengthWasm
+			}
+			iNdEx += length
+		case 3:
+			depth++
+		case 4:
+			if depth == 0 {
+				return 0, ErrUnexpectedEndOfGroupWasm
+			}
+			depth--
+		case 5:
+			iNdEx += 4
+		default:
+			return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
+		}
+		if iNdEx < 0 {
+			return 0, ErrInvalidLengthWasm
+		}
+		if depth == 0 {
+			return iNdEx, nil
+		}
+	}
+	return 0, io.ErrUnexpectedEOF
+}
+
+var (
+	ErrInvalidLengthWasm        = fmt.Errorf("proto: negative length found during unmarshaling")
+	ErrIntOverflowWasm          = fmt.Errorf("proto: integer overflow")
+	ErrUnexpectedEndOfGroupWasm = fmt.Errorf("proto: unexpected end of group")
+)