Hi Eddie,
you cannot subscribe to s/us. However, there is a different solution for your use case. Once the platform received/created your event, a realtime notification is produced. You can subscribe to this Event-Stream from your Microservice via the Notifications API.
Few links:
- About Notifications from official docs
- Notification 2.0 step-by-step knowledge base article
- Here is an example using this Python client.