Shopify GDRP Mandatory webhooks and Identify app Tenant

Hi,

I’m final stage of building my app. I want to implement Shopify GDRP Mandatory webhooks.

for customers/data_request webhook, not it will invoke my app’s API once request the customer data.
but I can’t recognize when invoking API which tenant belongs to the requested client information.

how to solve that issue, is there any way to add a custom attribute with customers/data_request payload?

Thank you