curl --request POST \
  --url https://api.example.com/api/v1/execution/orders \
  --header 'Content-Type: application/json' \
  --data '
{
  "exchange": "binance",
  "symbol": "BTCUSDT",
  "side": "buy",
  "type": "limit",
  "price": 65000,
  "quantity": 0.01,
  "strategyId": "cross_arb_btc_01"
}
'

{
  "code": 0,
  "msg": "ok",
  "data": {
    "clientOrderId": "ord_20260511_0001",
    "exchangeOrderId": "789123456",
    "exchange": "binance",
    "symbol": "BTCUSDT",
    "status": "new"
  }
}