User Instance
GET /api/users/124/?format=api
{
"username": "sgueniff",
"gravatar": "//www.gravatar.com/avatar/cf2578a987185de6cdea319873a821d4?d=wavatar",
"has_key": false
}GET /api/users/124/?format=api
{
"username": "sgueniff",
"gravatar": "//www.gravatar.com/avatar/cf2578a987185de6cdea319873a821d4?d=wavatar",
"has_key": false
}