User Instance
GET /api/users/51/?format=api
{
"username": "Okso",
"gravatar": "//www.gravatar.com/avatar/3637943331ec28aa180790f122eb1ce2?d=wavatar",
"has_key": false
}GET /api/users/51/?format=api
{
"username": "Okso",
"gravatar": "//www.gravatar.com/avatar/3637943331ec28aa180790f122eb1ce2?d=wavatar",
"has_key": false
}