Get user data in webhook for Make automation

Hello there,
I’m trying to build an automated workflow in Make that sends a notification in Slack whenever an action button on a record in list block is clicked by a user.
I created a webhook trigger in Make and pasted the URL in the settings of the action button and my workflow eventually gets triggered but I’m not able to get any user information in the webhook response. I need the email of the user to send my notification in Slack.
Anyone knows how to do that ?