modTime field is good.
But what I need is what info. is changed from the last fetch time. Telegram-bot caches the data for speed and for reducing gowdb.com load.
What I need is the information about the newly added troop or weapon, mana change, desc change, and the new kingdom etc since the last fetch time. Without this api, I have to retrieve all data and compare the changes with the cached data (Actually I do it in the current version)