How to handle In Game Currencies with Meta In App Purchases

Hy, i'm trying to implement an in game currency for my vr game and i'm curious if meta supports it on its API i looked into the docs but did not found anything that would solve my problem, i understand that we can create products and that i could create let's say a "100-coins" product and handle that on my app/game. But my point is how would i handle the balance in my game, i understand that i could save it locally or on a database but i was hopping that meta's api provided something to manage the balance of in game currencies, anyone has any experience on the subject?

Thanks in advance.