User Instance
GET /api/users/8/?format=api
{
"username": "Anonymous",
"gravatar": "//www.gravatar.com/avatar/b7abb8df284867537693afa4806231d1?d=wavatar",
"has_key": false
}GET /api/users/8/?format=api
{
"username": "Anonymous",
"gravatar": "//www.gravatar.com/avatar/b7abb8df284867537693afa4806231d1?d=wavatar",
"has_key": false
}