I've done a similar thing with a few other services and they all tend to follow the same pattern
You need to publish a REST API as your callback and send this URL as one of the parameters when calling the WhatsApp API to request a webhook subscription. It usually calls straight back to check the URL is valid and requires you to echo a temporary secret as validation. Assuming this is OK you will then receive calls whenever there is an event
The initial call to set up the webhook, will require authentication, so you need to go through the OAuth process to get a token
Hey bro i am doing the same thing i am working on whatsapp integration in mendix i am able to send message but i am not able to recieve i tried can u help me with this.