A Webhook allows you to get notified when a certain action happens on your list. When creating or updating a list, you can specify a webhook by passing a URL and the actions you want to subscribe to.
When the action happens, we will send a POST request to your webhook URL along with a payload. The payload type will be multipart/form-data. The form data named data will contain a JSON with the following information:
- client_id (same as account ID)
- list_id
- record_id (same as contact ID)
- event (same as the action type)