It is necessary that when withdrawing Vkcoin there should be a signature of the store, and not the signature of my page. How to do it?

Question

Python

I am making a VK bot based on VkCoin. When withdrawing coins, the recipient must have a transfer not from my page, but from the store.

I use asynchronization with VkBottle

Help) I searched everything. Found that you need to specify the markAsMerchant parameter, but where to specify it in Python?

Python 3.8