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    },
    {
      "id": 87,
      "participant_id": 9,
      "event_type": "charging started",
      "logged_at": "2025-03-10 17:47:24",
      "battery_pct": null
    },
    {
      "id": 88,
      "participant_id": 6,
      "event_type": "sync completed",
      "logged_at": "2025-03-11 03:44:38",
      "battery_pct": 92
    },
    {
      "id": 89,
      "participant_id": 20,
      "event_type": "battery low",
      "logged_at": "2025-03-10 16:17:01",
      "battery_pct": null
    },
    {
      "id": 90,
      "participant_id": 1,
      "event_type": "off wrist",
      "logged_at": "2025-03-10 15:30:25",
      "battery_pct": 32
    },
    {
      "id": 91,
      "participant_id": 2,
      "event_type": "sync failed",
      "logged_at": "2025-03-11 05:41:21",
      "battery_pct": 90
    },
    {
      "id": 92,
      "participant_id": 18,
      "event_type": "charging started",
      "logged_at": "2025-03-11 04:55:08",
      "battery_pct": null
    },
    {
      "id": 93,
      "participant_id": 10,
      "event_type": "sync completed",
      "logged_at": "2025-03-10 22:36:46",
      "battery_pct": 71
    },
    {
      "id": 94,
      "participant_id": 9,
      "event_type": "sync failed",
      "logged_at": "2025-03-11 06:18:55",
      "battery_pct": 74
    },
    {
      "id": 95,
      "participant_id": 13,
      "event_type": "sync completed",
      "logged_at": "2025-03-10 20:39:54",
      "battery_pct": 56
    },
    {
      "id": 96,
      "participant_id": 19,
      "event_type": "off wrist",
      "logged_at": "2025-03-11 03:45:10",
      "battery_pct": 41
    }
  ]
}