Filter incoming data

Your Acme Support automation now receives incoming data through a webhook. However, not every event should trigger the same processing. Some events, like "purchase", require immediate follow-up, while others should continue along a different path.

In this exercise, you'll filter webhook input so that only purchase-related events continue through your workflow. This reflects a real-world setup where systems receive mixed event types (signups, updates, purchases), and you only act on the relevant ones.