{
  "current_before_delete": {
    "user_id": "user_demo",
    "key": "drink",
    "value": "tea",
    "source": "conversation-2",
    "version": 2,
    "updated_at": "2026-07-19T19:28:11.573837+00:00"
  },
  "current_after_delete": null,
  "events": [
    {
      "action": "upsert",
      "key": "drink",
      "version": 1
    },
    {
      "action": "upsert",
      "key": "drink",
      "version": 2
    },
    {
      "action": "delete",
      "key": "drink",
      "existed": true
    }
  ]
}