Receive message request via Whatsapp with webhook

I'm new to software development and I'm being beaten to solve the problem below :-(

I need to create a webhook to respond to a request coming from Whatsapp, the first time I'm making this response and I'm taking a beating to receive this data.

I created the webhook route on the server pointing to my computer, and I'm using ngrok to test it.

Doing a request using get the controller responds

I have some doubts about to receive the data from Whatsapp.

Which verbose do I use to get the data from Whatsapp?

How can I get these data?