Create a user in Label Studio.
Whether the user allows newsletters
Avatar URL of the user
Email of the user
First name of the user
User ID
Initials of the user
Last name of the user
Phone number of the user
Username of the user
A ModelSerializer that takes additional arguments for "fields", "omit" and "expand" in order to control which fields are displayed, and whether to replace simple values with complex, nested serializations
Allow sending newsletters to user