createOrUpdateUser error Unauthorized

[tangmingzhi]

call method failed
public async createOrUpdateUser(
request: UpdateUserPayload,
signature: string
) {
const url = ${this.url}/user;
const response = await fetch(url, {
method: "PUT",
headers: {
"Content-Type": "application/json",
"X-Signed-Header": signature,
},
body: request.toString(),
});
if (!response.ok) {
throw new Error(createOrUpdateUser failed: ${response.statusText});
}
}

request log
X-Signed-Header:{"user_pubkey":"2rbL8qV2UaobpQFwAfwKGkcarFPdQLkPbzi5n35dDXu8","ciphersuite":"ed25519","contact_info":"","timestamp":1730264027}
body：
UzaXQJC9GvaWNvUiTRuBGZ1hRexqeh8PgoUZ3inym16VgFDFYHhG+/xjoOXmCTg5+Ol7btMZE0KUxc0EwgY5Bw==
An error occurred: Error: createOrUpdateUser failed: Unauthorized

what should to do ?