A webhook should be able to provide more metadata with the response, beyond just the message and/or quick replies. This information might be useful to correlate state with future messages within the same conversation.
Status: Idea Submitted
Well, it looks like this idea is already available! I could not find any documentation on the subject, which is probably the crux of the problem, but I was able to add a `customState` parameter to the response payload, which was then stored in the session.
@tzellman, can you please share how you were able to add a custom parameter to a webhook payload? I also have a need to do this. Thanks!