curl --request POST \
  --url https://api.roxom.com/v1/orders \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --header 'X-API-Signature: <api-key>' \
  --data '
{
  "instType": "perpetual",
  "orderType": "limit",
  "qty": "<string>",
  "side": "buy",
  "symbol": "<string>",
  "cancelAt": 123,
  "clientOrderId": "<string>",
  "postOnly": true,
  "px": "<string>",
  "reduceOnly": true,
  "timeInForce": "gtc",
  "triggerPx": "<string>",
  "unit": "sats"
}
'

{
  "data": {
    "orderId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  },
  "error": true
}