API endpoint that allows users to be viewed or edited.

GET /api/users/90f72c1a-e64b-462f-877f-91495d146d29/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, DELETE, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "https://katagotraining.org/api/users/90f72c1a-e64b-462f-877f-91495d146d29/?format=api",
    "username": "123an"
}