User Instance
GET /api/users/605/?format=api
https://numbas.mathcentre.ac.uk/api/users/605/?format=api", "profile": "https://numbas.mathcentre.ac.uk/accounts/profile/605/?format=api", "full_name": "Ben Brawn", "pk": 605, "avatar": { "20x20": "https://numbas.mathcentre.ac.uk/media/avatars/spongebob_wide.20x20.jpg", "40x40": "https://numbas.mathcentre.ac.uk/media/avatars/spongebob_wide.40x40.jpg", "150x150": "https://numbas.mathcentre.ac.uk/media/avatars/spongebob_wide.150x150.jpg" } }{ "url": "