Creates, or updates, the signature font and initials for the specified user. When creating a signature, you use this resource to create the signature name and then add the signature and initials images into the signature. **Note:** This will also create a default signature for the user when one does not exist. The userId property specified in the endpoint must match the authenticated user's user ID and the user must be a member of the account. The `signatureId` parameter accepts a signature ID. Docusign recommends you use signature ID (`signatureId`), since some names contain characters that do not properly encode into a URL. If you use the user name, it is likely that the name includes spaces. In that case, URL encode the name before using it in the endpoint. For example encode "Bob Smith" as "Bob%20Smith".

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}

Creates, or updates, the signature font and initials for the specified user. When creating a signature, you use this resource to create the signature name and then add the signature and initials images into the signature. **Note:** This will also create a default signature for the user when one does not exist. The userId property specified in the endpoint must match the authenticated user's user ID and the user must be a member of the account. The `signatureId` parameter accepts a signature ID. Docusign recommends you use signature ID (`signatureId`), since some names contain characters that do not properly encode into a URL. If you use the user name, it is likely that the name includes spaces. In that case, URL encode the name before using it in the endpoint. For example encode "Bob Smith" as "Bob%20Smith".

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}