tx 0x5cfa2ff6a65f8cca66a5604a5e09ebf8b25be10abfda9c534c5c5a22f5b2b81bCopy

payload

{
  "ModifyOrder": {
    "new_size": 748527,
    "order_id": 8553143,
    "new_price": null
  }
}