GET /api/users/123/
HTTP 200 OK
Allow: GET, PUT, PATCH, DELETE, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "username": "Slowmolosse",
    "gravatar": "//www.gravatar.com/avatar/245c532817fc027fa6b733d13ad0fc80?d=wavatar",
    "has_key": false
}