User Instance
GET /api/users/296/?format=api
{
"username": "Morti",
"gravatar": "//www.gravatar.com/avatar/18a27f3ba520c4fdb0a1f4b0bac4f846?d=wavatar",
"has_key": true
}GET /api/users/296/?format=api
{
"username": "Morti",
"gravatar": "//www.gravatar.com/avatar/18a27f3ba520c4fdb0a1f4b0bac4f846?d=wavatar",
"has_key": true
}