User Instance
GET /api/users/133/?format=api
{
"username": "Abdulito",
"gravatar": "//www.gravatar.com/avatar/14dcfef47dbad35544d202ed4ab19b39?d=wavatar",
"has_key": false
}GET /api/users/133/?format=api
{
"username": "Abdulito",
"gravatar": "//www.gravatar.com/avatar/14dcfef47dbad35544d202ed4ab19b39?d=wavatar",
"has_key": false
}