How to verify subscription of Orion context broker easily?
I would like to verify subscription of Orion Context Broker. But I don't know how to it.
In Readthedocs of Orion(http://fiware-orion.readthedocs.io/en/develop/user/walkthrough_apiv2/#subscriptions), Accumulator server is used but I can not use it(https://ask.fiware.org/question/878/failed-to-execute-accumulator-server-in-orion). Therefore, I am seeking alternative ways of verification.
Let me know the easy way to verify it?