What are the values in the body that is sent in a webhook? Are those dummy values.

Mostly, in response of a Stripe webhook, one would want to do something based on the id. For instance, for a charge failed event, one would like to retrieve the customer for which the charge has failed and would retrieve the customer details from Stripe. Dummy values will not help here.

Just thinking aloud, how would one use this? I have been in need for something to test Stripe webhooks.