This viewset automatically provides `list` and `retrieve` actions.

GET /api/v1/users/5/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "http://demo.scanapi.dev/api/v1/users/5/?format=api",
    "id": 5,
    "username": "OutR",
    "snippets": []
}