curl --request POST \
  --url http://localhost:8080/api/admins/promote \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "bot_id": 1,
  "chat_id": -100123456789,
  "user_id": 987654321,
  "perms": {
    "can_delete_messages": true,
    "can_pin_messages": true,
    "can_invite_users": true
  }
}
'

{
  "ok": true
}