User Instance
GET /api/users/277/?format=api
{
"username": "Lylie",
"gravatar": "//www.gravatar.com/avatar/a40ed6b9267bd2ab4c888516c6b9af88?d=wavatar",
"has_key": false
}GET /api/users/277/?format=api
{
"username": "Lylie",
"gravatar": "//www.gravatar.com/avatar/a40ed6b9267bd2ab4c888516c6b9af88?d=wavatar",
"has_key": false
}