{
  "meta": {
    "subject": "Roblox group 13989116",
    "retrieved": "2026-10-18T00:47:45.846Z",
    "licence": "Measured by roregister.com from public Roblox APIs. Free to reuse with attribution to roregister.com. Not affiliated with Roblox Corporation.",
    "notes": {
      "member_history": "insert-on-change; a point exists only where the value differed from the prior reading.",
      "detection_dates": "ownership/name changes are dated when this register observed them, not when they happened."
    }
  },
  "group": {
    "id": 13989116,
    "name": "Monster Truck World",
    "created": "2022-02-06T19:27:43.240Z",
    "owner_user_id": 491970127,
    "member_count": 2639,
    "has_verified_badge": false,
    "is_locked": false,
    "status": "live",
    "first_measured": "2026-08-10T12:04:32.725Z",
    "last_measured": "2026-10-17T23:52:17.818Z"
  },
  "member_history": [
    {
      "measured_at": "2026-08-10T12:04:32.725Z",
      "member_count": 2642
    },
    {
      "measured_at": "2026-08-10T16:42:11.774Z",
      "member_count": 2641
    },
    {
      "measured_at": "2026-08-14T01:22:12.583Z",
      "member_count": 2640
    },
    {
      "measured_at": "2026-08-26T21:00:07.997Z",
      "member_count": 2639
    },
    {
      "measured_at": "2026-09-19T22:20:24.359Z",
      "member_count": 2640
    },
    {
      "measured_at": "2026-09-28T01:00:19.993Z",
      "member_count": 2639
    },
    {
      "measured_at": "2026-10-03T18:20:13.432Z",
      "member_count": 2640
    },
    {
      "measured_at": "2026-10-04T03:50:47.585Z",
      "member_count": 2641
    },
    {
      "measured_at": "2026-10-04T15:12:10.813Z",
      "member_count": 2640
    },
    {
      "measured_at": "2026-10-12T14:02:04.708Z",
      "member_count": 2639
    },
    {
      "measured_at": "2026-10-13T05:21:21.041Z",
      "member_count": 2638
    },
    {
      "measured_at": "2026-10-16T04:00:36.330Z",
      "member_count": 2639
    }
  ],
  "name_history": [
    {
      "name": "Monster Truck World",
      "first_seen": "2026-08-10T12:04:32.725Z",
      "last_seen": "2026-10-17T23:52:17.818Z",
      "current": true
    }
  ],
  "ownership_events": [
    {
      "observed_at": "2026-08-10T16:03:35.485Z",
      "previous_owner": null,
      "new_owner": 491970127
    }
  ]
}