curl --request PATCH \
  --url https://api.example.com/api/core/user/profile/language \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "language": "de"
}
'

{
  "id": "<string>",
  "preferred_language": "de",
  "preferred_model": "<string>",
  "favorite_use_cases": [
    "<string>"
  ],
  "login_history": [
    {
      "timestamp": "2023-11-07T05:31:56Z",
      "method": "<string>",
      "ip_address": "<string>",
      "user_agent": "<string>"
    }
  ],
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "oauth_tokens": {},
  "email": "<string>"
}