User Instance
GET /api/users/207/?format=api
{
"username": "Ubik",
"gravatar": "//www.gravatar.com/avatar/3f5b7d5249b780bc0be3c1b0cba60018?d=wavatar",
"has_key": false
}GET /api/users/207/?format=api
{
"username": "Ubik",
"gravatar": "//www.gravatar.com/avatar/3f5b7d5249b780bc0be3c1b0cba60018?d=wavatar",
"has_key": false
}