Subscribing to updates on a join table

[imownbey]

This is more of a question, but I am trying to subscribe to updates on a join table to add a row to a able. So if theres a table of "message_recipients" with message_id and user_id, and I have list showing all of a users messages, I want to subscribe to new messages to that user and update the list. I understand using useSubscriptionWithQuery to query for nested releationships when a subscription happens, but I do not know how I can update a list with that subscription.