@Bobber I've never used it, just used it to learn more about the way how Meteor apps are structured.

Probably it isn't what you expected to get as an answer https://github.com/NodeBB/NodeBB/wiki/Plugin-Hooks#actionuserset https://github.com/NodeBB/NodeBB/blob/8f5bf1a7edc991f7b40c3f8520cec87b8b10b8f8/src/user.js#L159-L196