if you just need a part of the response to be sent to the agent,
the quckest and easiest option would be setup a sub workflow do the HTTP thing, put a edit field node, then only pass that to next step,
Thanks How do I store and retrieve that data to be sent to another node that I got from a sub workflow
For example, I received the ID from the subworkflow, where or what variable can it be stored to. in the book_appointment I have a json like but not sure what to put in the contactId