diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7d651ea..6ca0d72 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [v2.2.8] - 2023-09-18
+### Added
+- Endpoints for uploading and getting user's initials
+- Endpoints for uploading and getting user's signature
+
 ## [v2.2.7] - 2023-03-24
 ### Updated
 - Fixed type of `invite_link_instructions` parameter in routing detail
diff --git a/README.md b/README.md
index 1f9efc1..f2c28da 100644
--- a/README.md
+++ b/README.md
@@ -40,13 +40,17 @@ Simple API Client to integrate SignNow with your application or website. Sign do
       * [Get User Event Subscriptions](#get-event-subscriptions)
       * [Create User Event Subscription](#create-event-subscription)
       * [Delete User Event Subscription](#delete-event-subscription)
-    * [Embedded invites] (#embedded-invites)
+    * [Embedded invites](#embedded-invites)
       * [Create embedded invites](#create-embedded-invites)
       * [Create signing link](#create-signing-link)
       * [Prolong signing link](#prolong-signing-link)
       * [Delete embedded invites](#delete-embedded-invites)
       * [Reassign signers](#reassign-signers)
-      
+    * [User](#user)
+      * [Upload Initials](#upload-initials)
+      * [Get Initials](#get-initials)
+      * [Upload Signature](#upload-signature)
+      * [Get Signature](#get-signature)
 ## <a name="requirements"></a>Requirements 
 
 PHP 7.1 or newer
@@ -104,10 +108,14 @@ $entityManager = $auth->bearerByPassword('YOUR_BASIC_TOKEN_STRING', 'username',
 SignNow PHP SDK is covered with functional tests using Codeception and Phiremock.
 Phiremock allows us to mock calls to SignNow API. All the calls pass at 127.0.0.1 port 8008. Ensure that this port is not in use in the local machine before running test.
 
-Test execution in console:
+All the tests execution in console:
 ```bash
 vendor/bin/codecept run functional
 ```
+A single test execution in console:
+```bash
+vendor/bin/codecept run tests/functional/Template/CreateCest.php
+```
 Also, tests might be useful as examples of using SignNow PHP SDK.
 ### <a name="sandbox"></a>Sandbox
 Directory [sandbox](sandbox) contains php script to taste some SDK feature.
@@ -579,3 +587,75 @@ $documentUniqueId = '0d3122a857514462a67515c0a39c6015780518f2';
 $embedInvite->delete($documentUniqueId);
 ```
 #### <a name="reassign-signers"></a>Reassign signers
+### <a name="user"></a>User
+### <a name="upload-initials"></a>Upload Initials
+```php
+use SignNow\Api\Action\OAuth as SignNowOAuth;
+use SignNow\Api\Action\User\Initial as UserInitial;
+
+$auth = new SignNowOAuth('https://api.signnow.com');
+$initial = new UserInitial(
+  $auth->bearerByPassword('YOUR_BASIC_TOKEN', 'user', 'password')
+);
+
+$userInitialBase64EncodedImage = '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';
+$entity = $initial->upload($userInitialBase64EncodedImage);
+
+echo $entity->getId(), PHP_EOL,
+    $entity->getWidth(), PHP_EOL, 
+    $entity->getHeight(), PHP_EOL;
+```
+### <a name="get-initials"></a>Get Initials
+```php
+use SignNow\Api\Action\OAuth as SignNowOAuth;
+use SignNow\Api\Action\User\Initial as UserInitial;
+
+$auth = new SignNowOAuth('https://api.signnow.com');
+$initial = new UserInitial(
+  $auth->bearerByPassword('YOUR_BASIC_TOKEN', 'user', 'password')
+);
+
+$entity = $initial->get();
+
+$signatureImage = base64_decode($entity->getData());
+
+echo $entity->getId(), PHP_EOL,
+    $entity->getWidth(), PHP_EOL, 
+    $entity->getHeight(), PHP_EOL;
+```
+### <a name="upload-signature"></a>Upload Signature
+```php
+use SignNow\Api\Action\OAuth as SignNowOAuth;
+use SignNow\Api\Action\User\Signature as UserSignature;
+
+$auth = new SignNowOAuth('https://api.signnow.com');
+$signature = new UserSignature(
+  $auth->bearerByPassword('YOUR_BASIC_TOKEN', 'user', 'password')
+);
+
+$userSignatureImage = file_get_contents('/path/to/image');
+$userSignatureBase64EncodedImage = base64_decode($userSignatureImage);
+$entity = $signature->upload($userSignatureBase64EncodedImage);
+
+echo $entity->getId(), PHP_EOL,
+    $entity->getWidth(), PHP_EOL,
+    $entity->getHeight(), PHP_EOL;
+```
+### <a name="get-signature"></a>Get Signature
+```php
+use SignNow\Api\Action\OAuth as SignNowOAuth;
+use SignNow\Api\Action\User\Signature as UserSignature;
+
+$auth = new SignNowOAuth('https://api.signnow.com');
+$signature = new UserSignature(
+  $auth->bearerByPassword('YOUR_BASIC_TOKEN', 'user', 'password')
+);
+
+$entity = $signature->get();
+
+$signatureImage = base64_decode($entity->getData());
+
+echo $entity->getId(), PHP_EOL,
+    $entity->getWidth(), PHP_EOL,
+    $entity->getHeight(), PHP_EOL;
+```
diff --git a/src/Action/User/Initial.php b/src/Action/User/Initial.php
new file mode 100644
index 0000000..c6d659c
--- /dev/null
+++ b/src/Action/User/Initial.php
@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SignNow\Api\Action\User;
+
+use ReflectionException;
+use SignNow\Api\Entity\User\Initial as UserInitialEntity;
+use SignNow\Api\Entity\User\ImageResponse;
+use SignNow\Rest\EntityManager;
+use SignNow\Rest\EntityManager\Exception\EntityManagerException;
+use SignNow\Rest\Http\Request;
+
+/**
+ * Class Initial
+ *
+ * @package SignNow\Api\Action\User
+ */
+class Initial
+{
+    /**
+     * @var EntityManager
+     */
+    private $entityManager;
+
+    /**
+     * Initial constructor.
+     *
+     * @param EntityManager $entityManager
+     */
+    public function __construct(EntityManager $entityManager)
+    {
+        $this->entityManager = $entityManager;
+    }
+
+    /**
+     * @param string $base64ImageData
+     *
+     * @return object|ImageResponse
+     * @throws EntityManagerException|ReflectionException
+     */
+    public function upload(string $base64ImageData): ImageResponse
+    {
+        $this->entityManager->setUpdateHttpMethod(Request::METHOD_PUT);
+        
+        return $this->entityManager->update(
+            new UserInitialEntity($base64ImageData)
+        );
+    }
+
+    /**
+     * @return object|ImageResponse
+     * @throws EntityManagerException|ReflectionException
+     */
+    public function get(): ImageResponse
+    {
+        return $this->entityManager->get(
+            new UserInitialEntity()
+        );
+    }
+}
diff --git a/src/Action/User/Signature.php b/src/Action/User/Signature.php
new file mode 100644
index 0000000..b794754
--- /dev/null
+++ b/src/Action/User/Signature.php
@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SignNow\Api\Action\User;
+
+use ReflectionException;
+use SignNow\Api\Entity\User\Signature as UserSignatureEntity;
+use SignNow\Api\Entity\User\ImageResponse;
+use SignNow\Rest\EntityManager;
+use SignNow\Rest\EntityManager\Exception\EntityManagerException;
+use SignNow\Rest\Http\Request;
+
+/**
+ * Class Signature
+ *
+ * @package SignNow\Api\Action\User
+ */
+class Signature
+{
+    /**
+     * @var EntityManager
+     */
+    private $entityManager;
+
+    /**
+     * Signature constructor.
+     *
+     * @param EntityManager $entityManager
+     */
+    public function __construct(EntityManager $entityManager)
+    {
+        $this->entityManager = $entityManager;
+    }
+
+    /**
+     * @param string $base64ImageData
+     *
+     * @return object|ImageResponse
+     * @throws EntityManagerException|ReflectionException
+     */
+    public function upload(string $base64ImageData): ImageResponse
+    {
+        $this->entityManager->setUpdateHttpMethod(Request::METHOD_PUT);
+        
+        return $this->entityManager->update(
+            new UserSignatureEntity($base64ImageData)
+        );
+    }
+
+    /**
+     * @return object|ImageResponse
+     * @throws EntityManagerException|ReflectionException
+     */
+    public function get(): ImageResponse
+    {
+        return $this->entityManager->get(
+            new UserSignatureEntity()
+        );
+    }
+}
diff --git a/src/Entity/User/ImageResponse.php b/src/Entity/User/ImageResponse.php
new file mode 100644
index 0000000..1615f37
--- /dev/null
+++ b/src/Entity/User/ImageResponse.php
@@ -0,0 +1,102 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SignNow\Api\Entity\User;
+
+use JMS\Serializer\Annotation as Serializer;
+
+/**
+ * Class ImageResponse
+ *
+ * @package SignNow\Api\Entity\User
+ */
+class ImageResponse
+{
+    /**
+     * @var string
+     *
+     * @Serializer\Type("string")
+     */
+    private $id;
+
+    /**
+     * @var int
+     *
+     * @Serializer\Type("integer")
+     */
+    private $width;
+
+    /**
+     * @var int
+     *
+     * @Serializer\Type("integer")
+     */
+    private $height;
+
+    /**
+     * @var int
+     *
+     * @Serializer\Type("integer")
+     */
+    private $created;
+
+    /**
+     * This field is in use fot GET /user/initial
+     * base64 encoded image data
+     *
+     * @var null|string
+     * 
+     * @Serializer\Type("string")
+     */
+    private $data;
+
+    /**
+     * This field is in use fot GET /user/initial
+     *
+     * @var null|string
+     *
+     * @Serializer\Type("string")
+     */
+    private $uniqueId;
+
+    /**
+     * @return string
+     */
+    public function getId(): string
+    {
+        return $this->uniqueId ?? $this->id;
+    }
+
+    /**
+     * @return int
+     */
+    public function getWidth(): int
+    {
+        return $this->width;
+    }
+
+    /**
+     * @return int
+     */
+    public function getHeight(): int
+    {
+        return $this->height;
+    }
+
+    /**
+     * @return int
+     */
+    public function getCreated(): int
+    {
+        return $this->created;
+    }
+
+    /**
+     * @return string
+     */
+    public function getData(): string
+    {
+        return $this->data;
+    }
+}
diff --git a/src/Entity/User/Initial.php b/src/Entity/User/Initial.php
new file mode 100644
index 0000000..2e7fbec
--- /dev/null
+++ b/src/Entity/User/Initial.php
@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SignNow\Api\Entity\User;
+
+use SignNow\Rest\Entity\Entity;
+use SignNow\Rest\EntityManager\Annotation\HttpEntity;
+use SignNow\Rest\EntityManager\Annotation\ResponseType;
+
+/**
+ * Class Initial
+ *
+ * @HttpEntity("user/initial", idProperty="")
+ * @ResponseType("SignNow\Api\Entity\User\ImageResponse")
+ *
+ * @package SignNow\Api\Entity\User
+ */
+class Initial extends Entity
+{
+    /**
+     * @var string
+     */
+    protected $data;
+
+    /**
+     * Initial constructor.
+     *
+     * @param string $data user initials image as base64 encoded string
+     */
+    public function __construct(string $data = '')
+    {
+        $this->data = $data;
+    }
+}
diff --git a/src/Entity/User/Signature.php b/src/Entity/User/Signature.php
new file mode 100644
index 0000000..8021f7b
--- /dev/null
+++ b/src/Entity/User/Signature.php
@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SignNow\Api\Entity\User;
+
+use SignNow\Rest\Entity\Entity;
+use SignNow\Rest\EntityManager\Annotation\HttpEntity;
+use SignNow\Rest\EntityManager\Annotation\ResponseType;
+
+/**
+ * Class Signature
+ *
+ * @HttpEntity("user/signature", idProperty="")
+ * @ResponseType("SignNow\Api\Entity\User\ImageResponse")
+ *
+ * @package SignNow\Api\Entity\User
+ */
+class Signature extends Entity
+{
+    /**
+     * @var string
+     */
+    protected $data;
+
+    /**
+     * Signature constructor.
+     *
+     * @param string $data user signature image as base64 encoded string
+     */
+    public function __construct(string $data = '')
+    {
+        $this->data = $data;
+    }
+}
diff --git a/tests/_support/Module/Mock/ApiUserMock.php b/tests/_support/Module/Mock/ApiUserMock.php
new file mode 100644
index 0000000..8d18a91
--- /dev/null
+++ b/tests/_support/Module/Mock/ApiUserMock.php
@@ -0,0 +1,162 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Module\Mock;
+
+use Codeception\Lib\Interfaces\DependsOnModule;
+use Codeception\Module;
+use Codeception\Module\Phiremock as PhiremockModule;
+use Exception;
+use Helper\Str;
+use Mcustiel\Phiremock\Client\Phiremock;
+use Mcustiel\Phiremock\Client\Utils\A;
+use Mcustiel\Phiremock\Client\Utils\Is;
+use Mcustiel\Phiremock\Client\Utils\Respond;
+use Psr\Http\Client\ClientExceptionInterface;
+
+/**
+ * Class ApiUserMock
+ *
+ * @package Module\Mock
+ */
+class ApiUserMock extends Module implements DependsOnModule
+{
+    private const USER_INITIAL_URL = '/user/initial';
+    private const USER_SIGNATURE_URL = '/user/signature';
+
+    /**
+     * @var PhiremockModule
+     */
+    private $phiremock;
+
+    /**
+     * @param PhiremockModule $phiremock
+     */
+    public function _inject(PhiremockModule $phiremock): void
+    {
+        $this->phiremock = $phiremock;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function _depends()
+    {
+        return [
+            'Phiremock' => sprintf('"%s" depends on module "Phiremock"', __CLASS__),
+        ];
+    }
+
+    /**
+     * @return void
+     * @throws ClientExceptionInterface
+     * @throws Exception
+     */
+    public function mockGetUserInitial(): void
+    {
+        $this->phiremock->expectARequestToRemoteServiceWithAResponse(
+            Phiremock::on(
+                A::getRequest()
+                 ->andUrl(Is::equalTo(self::USER_INITIAL_URL))
+            )->then(
+                Respond::withStatusCode(200)
+                       ->andHeader('Content-Type', 'application/json')
+                       ->andBody(
+                           json_encode(
+                               [
+                                   'id' => Str::generateUniqueId(),
+                                   'width' => 100,
+                                   'height' => 100,
+                                   'created' => time(),
+                               ]
+                           )
+                       )
+            )
+        );
+    }
+
+    /**
+     * @return void
+     * @throws ClientExceptionInterface
+     * @throws Exception
+     */
+    public function mockUpdateUserInitial(): void
+    {
+        $this->phiremock->expectARequestToRemoteServiceWithAResponse(
+            Phiremock::on(
+                A::putRequest()
+                 ->andUrl(Is::equalTo(self::USER_INITIAL_URL))
+            )->then(
+                Respond::withStatusCode(200)
+                       ->andHeader('Content-Type', 'application/json')
+                       ->andBody(
+                           json_encode(
+                               [
+                                   'id' => Str::generateUniqueId(),
+                                   'width' => 100,
+                                   'height' => 100,
+                                   'created' => time(),
+                               ]
+                           )
+                       )
+            )
+        );
+    }
+
+    /**
+     * @return void
+     * @throws ClientExceptionInterface
+     * @throws Exception
+     */
+    public function mockGetUserSignature(): void
+    {
+        $this->phiremock->expectARequestToRemoteServiceWithAResponse(
+            Phiremock::on(
+                A::getRequest()
+                 ->andUrl(Is::equalTo(self::USER_SIGNATURE_URL))
+            )->then(
+                Respond::withStatusCode(200)
+                       ->andHeader('Content-Type', 'application/json')
+                       ->andBody(
+                           json_encode(
+                               [
+                                   'id' => Str::generateUniqueId(),
+                                   'width' => 100,
+                                   'height' => 100,
+                                   'created' => time(),
+                               ]
+                           )
+                       )
+            )
+        );
+    }
+
+    /**
+     * @return void
+     * @throws ClientExceptionInterface
+     * @throws Exception
+     */
+    public function mockUpdateUserSignature(): void
+    {
+        $this->phiremock->expectARequestToRemoteServiceWithAResponse(
+            Phiremock::on(
+                A::putRequest()
+                 ->andUrl(Is::equalTo(self::USER_SIGNATURE_URL))
+            )->then(
+                Respond::withStatusCode(200)
+                       ->andHeader('Content-Type', 'application/json')
+                       ->andBody(
+                           json_encode(
+                               [
+                                   'id' => Str::generateUniqueId(),
+                                   'width' => 100,
+                                   'height' => 100,
+                                   'created' => time(),
+                               ]
+                           )
+                       )
+            )
+        );
+    }
+}
diff --git a/tests/functional.suite.yml b/tests/functional.suite.yml
index 04e1201..3c34574 100644
--- a/tests/functional.suite.yml
+++ b/tests/functional.suite.yml
@@ -38,4 +38,6 @@ modules:
               depends: Phiremock
         - \Module\Mock\Debug:
               depends: Phiremock
+        - \Module\Mock\ApiUserMock:
+            depends: Phiremock
     step_decorators: ~
diff --git a/tests/functional/User/UserInitialCest.php b/tests/functional/User/UserInitialCest.php
new file mode 100644
index 0000000..2efb7ee
--- /dev/null
+++ b/tests/functional/User/UserInitialCest.php
@@ -0,0 +1,73 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SignNow\Tests\Functional\User;
+
+use FunctionalTester;
+use Helper\Str;
+use ReflectionException;
+use SignNow\Api\Action\User\Initial;
+use SignNow\Rest\EntityManager;
+use SignNow\Rest\EntityManager\Exception\EntityManagerException;
+use SignNow\Tests\Functional\BaseCest;
+
+/**
+ * Class UserInitialCest
+ *
+ * @package SignNow\Tests\Functional\User
+ */
+class UserInitialCest  extends BaseCest
+{
+    /**
+     * @var EntityManager
+     */
+    private $auth;
+
+    /**
+     * @param FunctionalTester $I
+     */
+    public function _before(FunctionalTester $I): void
+    {
+        $this->auth = $this->createSignNowBearerTokenAuth($I);
+    }
+
+    /**
+     * @throws ReflectionException
+     * @throws EntityManagerException
+     */
+    public function testUpdate(FunctionalTester $I): void
+    {
+        $I->mockUpdateUserInitial();
+
+        $initial = new Initial($this->auth);
+
+        $base64encodedImageOfInitial = Str::getBase64Image();
+
+        $entity = $initial->upload($base64encodedImageOfInitial);
+
+        $I->assertSame(40, strlen($entity->getId()));
+        $I->assertSame(100, $entity->getWidth());
+        $I->assertSame(100, $entity->getHeight());
+        $I->assertIsInt($entity->getCreated());
+    }
+
+    /**
+     * @throws ReflectionException
+     * @throws EntityManagerException
+     */
+    public function testGet(FunctionalTester $I): void
+    {
+        $I->mockGetUserInitial();
+
+        $initial = new Initial($this->auth);
+
+
+        $entity = $initial->get();
+
+        $I->assertSame(40, strlen($entity->getId()));
+        $I->assertSame(100, $entity->getWidth());
+        $I->assertSame(100, $entity->getHeight());
+        $I->assertIsInt($entity->getCreated());
+    }
+}
diff --git a/tests/functional/User/UserSignatureCest.php b/tests/functional/User/UserSignatureCest.php
new file mode 100644
index 0000000..f473d79
--- /dev/null
+++ b/tests/functional/User/UserSignatureCest.php
@@ -0,0 +1,73 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SignNow\Tests\Functional\User;
+
+use FunctionalTester;
+use Helper\Str;
+use ReflectionException;
+use SignNow\Api\Action\User\Signature;
+use SignNow\Rest\EntityManager;
+use SignNow\Rest\EntityManager\Exception\EntityManagerException;
+use SignNow\Tests\Functional\BaseCest;
+
+/**
+ * Class UserSignatureCest
+ *
+ * @package SignNow\Tests\Functional\User
+ */
+class UserSignatureCest  extends BaseCest
+{
+    /**
+     * @var EntityManager
+     */
+    private $auth;
+
+    /**
+     * @param FunctionalTester $I
+     */
+    public function _before(FunctionalTester $I): void
+    {
+        $this->auth = $this->createSignNowBearerTokenAuth($I);
+    }
+
+    /**
+     * @throws ReflectionException
+     * @throws EntityManagerException
+     */
+    public function testUpdate(FunctionalTester $I): void
+    {
+        $I->mockUpdateUserSignature();
+
+        $signature = new Signature($this->auth);
+
+        $base64encodedImageOfSignature = Str::getBase64Image();
+
+        $entity = $signature->upload($base64encodedImageOfSignature);
+
+        $I->assertSame(40, strlen($entity->getId()));
+        $I->assertSame(100, $entity->getWidth());
+        $I->assertSame(100, $entity->getHeight());
+        $I->assertIsInt($entity->getCreated());
+    }
+
+    /**
+     * @throws ReflectionException
+     * @throws EntityManagerException
+     */
+    public function testGet(FunctionalTester $I): void
+    {
+        $I->mockGetUserSignature();
+
+        $signature = new Signature($this->auth);
+
+
+        $entity = $signature->get();
+
+        $I->assertSame(40, strlen($entity->getId()));
+        $I->assertSame(100, $entity->getWidth());
+        $I->assertSame(100, $entity->getHeight());
+        $I->assertIsInt($entity->getCreated());
+    }
+}