Implement message bus/pubsub subscriber in EPI

Hi,

I would like to create a subscriber for an external message bus solution, so that the web server can listen/receive external events and react to it (e.g. resync data, update inventory, prices, ...).

But how would I create such a subscriber that runs continiously in the background. In .Net Core I would use IHostApplicationLifetime and start the pub sub listener on ApplicationStarted.

How would I do that in EPI server (11.14)? Could anyone give me some hints?