user.group.joined

A user joined a group. Groups are rule-based, so membership changes whenever user attributes or activity change. When a newly created group is first computed, every matching user emits a join with due_to_group_creation set to true — filter on due_to_group_creation = false to receive only membership changes after that first computation.

Subscription filters

• due_to_group_creation — true or false
• group — filter to specific group ids