{
  "promotions": [
    {
      "merchant_supplied_id": "D-12345",
      "promotional_price": 42,
      "start_date": "2026-06-02T14:30:00Z",
      "end_date": "2026-06-02T14:30:00Z",
      "description": "Leave at the front desk."
    }
  ]
}