How to know which shop is the order from

Hello! I have a software that consolidates many e-commerces from my clients. Some of my clients have shopify, woocommerce, Jumpseller, Falabella, between others.

If I'm suscribed to a client's webhook onCreateOrder, the only thing I got is "order_ID" but I have no idea from what shop. So how I'm suppose to ask for the order information with a GET request if I don't know which credentials to use (I have many clients with Falabella).