User Instance
GET /api/users/113/?format=api
{
"username": "Mino",
"gravatar": "//www.gravatar.com/avatar/43a26112fafa83de980bde551a7d62b8?d=wavatar",
"has_key": false
}GET /api/users/113/?format=api
{
"username": "Mino",
"gravatar": "//www.gravatar.com/avatar/43a26112fafa83de980bde551a7d62b8?d=wavatar",
"has_key": false
}