[
  {
    "order_id": "O-001",
    "product_id": "P-101",
    "seq": 1,
    "from_state": null,
    "to_state": "created",
    "event_type": "order_created",
    "amount_krw": 3500,
    "ts": "2026-07-01T10:00:00Z"
  },
  {
    "order_id": "O-001",
    "product_id": "P-101",
    "seq": 2,
    "from_state": "created",
    "to_state": "paid",
    "event_type": "payment_captured",
    "amount_krw": 3500,
    "ts": "2026-07-01T10:02:00Z"
  },
  {
    "order_id": "O-001",
    "product_id": "P-101",
    "seq": 3,
    "from_state": "paid",
    "to_state": "in_production",
    "event_type": "production_started",
    "amount_krw": null,
    "ts": "2026-07-01T11:00:00Z"
  },
  {
    "order_id": "O-002",
    "product_id": "P-102",
    "seq": 1,
    "from_state": null,
    "to_state": "created",
    "event_type": "order_created",
    "amount_krw": 8900,
    "ts": "2026-07-02T09:00:00Z"
  },
  {
    "order_id": "O-002",
    "product_id": "P-102",
    "seq": 2,
    "from_state": "created",
    "to_state": "shipped",
    "event_type": "shipment_created",
    "amount_krw": 8900,
    "ts": "2026-07-02T09:05:00Z"
  },
  {
    "order_id": "O-003",
    "product_id": "P-103",
    "seq": 1,
    "from_state": null,
    "to_state": "created",
    "event_type": "order_created",
    "amount_krw": 18000,
    "ts": "2026-07-02T14:00:00Z"
  },
  {
    "order_id": "O-003",
    "product_id": "P-103",
    "seq": 2,
    "from_state": "created",
    "to_state": "paid",
    "event_type": "payment_captured",
    "amount_krw": null,
    "ts": "2026-07-02T14:01:00Z"
  },
  {
    "order_id": "O-004",
    "product_id": "P-999",
    "seq": 1,
    "from_state": null,
    "to_state": "created",
    "event_type": "order_created",
    "amount_krw": 12000,
    "ts": "2026-07-03T08:00:00Z"
  },
  {
    "order_id": "O-005",
    "product_id": "P-109",
    "seq": 1,
    "from_state": null,
    "to_state": "created",
    "event_type": "order_created",
    "amount_krw": 29000,
    "ts": "2026-07-03T15:00:00Z"
  },
  {
    "order_id": "O-005",
    "product_id": "P-109",
    "seq": 2,
    "from_state": "created",
    "to_state": "paid",
    "event_type": "payment_captured",
    "amount_krw": 29000,
    "ts": "2026-07-03T15:02:00Z"
  },
  {
    "order_id": "O-005",
    "product_id": "P-109",
    "seq": 3,
    "from_state": "paid",
    "to_state": "in_production",
    "event_type": "production_started",
    "amount_krw": null,
    "ts": "2026-07-03T16:00:00Z"
  },
  {
    "order_id": "O-005",
    "product_id": "P-109",
    "seq": 4,
    "from_state": "in_production",
    "to_state": "printed",
    "event_type": "print_done",
    "amount_krw": null,
    "ts": "2026-07-04T09:00:00Z"
  },
  {
    "order_id": "O-005",
    "product_id": "P-109",
    "seq": 5,
    "from_state": "printed",
    "to_state": "shipped",
    "event_type": "shipment_created",
    "amount_krw": null,
    "ts": "2026-07-04T12:00:00Z"
  },
  {
    "order_id": "O-005",
    "product_id": "P-109",
    "seq": 6,
    "from_state": "shipped",
    "to_state": "refunded",
    "event_type": "refund_done",
    "amount_krw": 29000,
    "ts": "2026-07-06T10:00:00Z"
  },
  {
    "order_id": "O-006",
    "product_id": "P-108",
    "seq": 1,
    "from_state": null,
    "to_state": "created",
    "event_type": "order_created",
    "amount_krw": 5500,
    "ts": "2026-07-05T11:00:00Z"
  },
  {
    "order_id": "O-006",
    "product_id": "P-108",
    "seq": 2,
    "from_state": "created",
    "to_state": "paid",
    "event_type": "payment_captured",
    "amount_krw": 5500,
    "ts": "2026-07-05T11:03:00Z"
  }
]