{
  "topic": "custom user properties",
  "worked_example": {
    "example_property": "loyalty_tier",
    "dimension_name": "Membership tier",
    "scope": "User",
    "sent_date": "2026-11-11",
    "usable_earliest": "2026-11-12",
    "usable_latest": "2026-11-13"
  },
  "checkpoints": [
    "User property confirmed in DebugView",
    "Scope is User, locked after save",
    "User property name copied exactly"
  ]
}