{"success":true,"user":{"id":0,"username":"demo","email":"demo@example.com","first_name":"Demo","last_name":"User","role":"viewer","is_active":true,"is_superuser":false,"created_at":"2026-04-19T17:05:12.768Z","updated_at":"2026-04-19T17:05:12.769Z"},"is_demo":true}