User Instance
GET /api/users/122/?format=api
{
"username": "Jardinier",
"gravatar": "//www.gravatar.com/avatar/bc16fa0170db848410ec2ec8e1a9ebc1?d=wavatar",
"has_key": false
}GET /api/users/122/?format=api
{
"username": "Jardinier",
"gravatar": "//www.gravatar.com/avatar/bc16fa0170db848410ec2ec8e1a9ebc1?d=wavatar",
"has_key": false
}