Where can I find documentation on how to implement a dispatch event using webhooks?

I am in the same position with you. The only thing I found useful is this: https://www.tothenew.com/blog/unleashing-real-time-connections-a-compreh...

Here it says something about defining the payload.
But I can't find anything like that (e.g. a field Payload) that can help for this.

Is there anybody that could guide us on how to use this module?

How do you define the payload? And Where?

The payload included depends on the event or hook that triggers the sending.

An entity type event sends the entity, the current user the event identifier:
https://git.drupalcode.org/project/webhooks/-/blob/3.0.x/src/Hook/Webhoo...

You can find the other events and their payload by inspecting the above file or by receiving and logging the event you are interested in.

The online help has also been updated: https://git.drupalcode.org/project/webhooks/-/blob/4.0.x/src/Hook/Webhoo...

Automatically closed - issue fixed for 2 weeks with no activity.