Bitbucket-Slack integration: How to get user-specific notifications for comments on a user's PRs Edited

[Aidan_Fennessy]

As a team, it would be very helpful to get Slack notifications when a comment is made on a pull-request (PR). However, given how often comments are made on PRs we could quickly start getting too many notifications and therefore it would only be useful if messages were directed at specific users (via DMs or user-mentions) for activity related to that user's pull-request. 

Is it possible to do this?

Can this be done via "Branch Patterns for notifications" or any other means?

Ideally something like Github's Pull Reminders would be exactly what is needed here...

https://pullreminders.com/

Thank you.