curl --request PUT \
  --url https://ella.navgurukul.org/api/users/me/settings \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "fluency_focus": 1,
  "grammar_focus": 2,
  "vocab_focus": 2
}
'

{
  "id": "<string>",
  "device_id": "<string>",
  "profile": {
    "name": "—",
    "age": 123,
    "city": "—",
    "grade": "<string>"
  },
  "level": "<string>",
  "level_label": "<string>",
  "grammar_focus": 2,
  "vocab_focus": 2,
  "fluency_focus": 1,
  "first_session_done": false,
  "interests": [],
  "owned": [],
  "emerging": [],
  "due_next": {},
  "effort": {
    "times_spoken_total": 0
  },
  "sightings": {},
  "strength": {},
  "updated_after_chat": 0,
  "last_topics": [],
  "persona_memory": {},
  "skills_progress": {}
}