How to get push notification content in a campaign to push to external database?

I need to extract the content of push notifications when sending them as part of a campaign and then store this push notification content in an external database. Currently, my only option is to use a webhook to capture this information after the notification is sent. However, I haven't been able to find a token that directly links to the content of the push notifications. As a temporary solution, I'm including the push notification content in the campaign or program description, but this method is not perfect and could lead to operational errors. Are there any other ways to achieve this?