Webhook Help! Unable to send to Power Automate when HTTP request is received trigger

Description
We would like to leverage webhooks to integrate with our CRM. I have been able to do this with multiple third party platforms by sending the notifications to a Power Automate URL that triggers flow from system to system. Zoom is the only system that I have run into issues with due to the required hashed token response. I attempted to utilize the sample github app with Heroku and got it to validate successfully, but I ultimately need the notification to reach the URL for my Power Automate flow. The sample works for validation but that’s it.

Error?
Cannot validate using Power Automate URL, can validate using sample in API documentation, but doesn’t end up where I need it to go, which is the power automate flow

How To Reproduce
Steps to reproduce the behavior:
Use power automate URL as the webhook destination