User Instance
GET /api/users/109/?format=api
{
"username": "Maribib",
"gravatar": "//www.gravatar.com/avatar/ffa358d14d71a55218c9fdf2493417e2?d=wavatar",
"has_key": false
}GET /api/users/109/?format=api
{
"username": "Maribib",
"gravatar": "//www.gravatar.com/avatar/ffa358d14d71a55218c9fdf2493417e2?d=wavatar",
"has_key": false
}