curl --request POST \
  --url https://whitebit.com/api/v4/order/bulk \
  --header 'Content-Type: application/json' \
  --header 'X-TXC-APIKEY: <api-key>' \
  --data '
{
  "orders": [
    {
      "side": "buy",
      "amount": "<string>",
      "price": "<string>",
      "market": "<string>",
      "postOnly": true,
      "ioc": true,
      "clientOrderId": "<string>",
      "rpi": true
    }
  ],
  "stopOnFail": true,
  "request": "<string>",
  "nonce": "<string>"
}
'

[
  {
    "result": {
      "orderId": 123,
      "clientOrderId": "<string>",
      "market": "<string>",
      "side": "<string>",
      "type": "<string>",
      "timestamp": 123,
      "dealMoney": "<string>",
      "dealStock": "<string>",
      "amount": "<string>",
      "left": "<string>",
      "dealFee": "<string>",
      "price": "<string>",
      "postOnly": true,
      "ioc": true,
      "status": "<string>",
      "stp": "<string>",
      "positionSide": "<string>",
      "rpi": true
    },
    "error": "<string>"
  }
]