GET /api/users/15/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, DELETE, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "username": "Steak",
    "gravatar": "//www.gravatar.com/avatar/d3f1c7e28a033040a90f272658c12f58?d=wavatar",
    "has_key": false
}