{
  "orderId": "ORD-987654",
  "portfolioId": "PF-123456",
  "securityId": "US0378331005",
  "side": "buy",
  "quantity": 100,
  "filledQuantity": 100,
  "averagePrice": 195.0,
  "status": "filled",
  "orderType": "market",
  "createdAt": "2026-04-19T10:30:00Z",
  "filledAt": "2026-04-19T10:31:05Z"
}