Stripe webhooks depending on domain

Problem/Motivation

Hello,

we're using Stripe integration for the memberships and we use Domains module. Each domain belongs to a different customer and has different Stripe secret key.
I'm trying to create a webhook where I can check if payment was succesfully finished etc., but I'm a bit stuck as I have to pass Stripe secret key to get data from the webhook, but I don't have this value anywhere when the endpoint is triggered. Maybe I'm missing something.
Does anyone have a similar issue ? Any suggestions would be appreciated !
Thanks !

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes