How to trouble-shoot Platform Events from Slack?

Centro offers the ability to Fire a Platform Event from a Slack Workflow step

The platform events can be consumed by Apex, Salesforce flow, and other Salesforce Native functionality. To ensure your Platform event is published correctly, Centro recommends validating the Fire Platform Event Workflow Step using Salesforce Workbench. After navigating to Salesforce Workbench, select Queries, Streaming Push Topics. Update the radio button to Generic Subscriptions and populate the Subscription field with "/event/centro__action__e" to monitor Centro platform events.