User Instance
GET /api/users/414/?format=api
{
"username": "QuarkUp",
"gravatar": "//www.gravatar.com/avatar/68f10243cefa112fb1bc458ba984cac2?d=wavatar",
"has_key": true
}GET /api/users/414/?format=api
{
"username": "QuarkUp",
"gravatar": "//www.gravatar.com/avatar/68f10243cefa112fb1bc458ba984cac2?d=wavatar",
"has_key": true
}