curl --request GET \
  --url http://localhost:8080/remnawave/users/{telegram_id}/traffic

{
  "used_traffic_bytes": 123,
  "used_traffic_gb": 123,
  "lifetime_used_traffic_bytes": 123,
  "lifetime_used_traffic_gb": 123,
  "traffic_limit_bytes": 123,
  "traffic_limit_gb": 123,
  "telegram_id": 123,
  "subscription_url": "<string>"
}