User Instance
GET /api/users/160/?format=api
{
"username": "Maestelia",
"gravatar": "//www.gravatar.com/avatar/ca024ab2aa40f3d18ab833b6a71e3b7a?d=wavatar",
"has_key": false
}GET /api/users/160/?format=api
{
"username": "Maestelia",
"gravatar": "//www.gravatar.com/avatar/ca024ab2aa40f3d18ab833b6a71e3b7a?d=wavatar",
"has_key": false
}