Get a user's details and access. Use this to check or edit. Returns the user. location and accounts come as {value, label} pairs, ready to pre-fill a form; user_type is the value to send back when you edit the user.

Prerequisites: a bearer token, and the user's id (user_id) from List users.

Authentication: Partner or Account token. user_id must be a user inside your own account tree (a Partner token reaches users in any account under the partner, an Account token only its own account); otherwise 422.

Rate limit: none.