tx 0x5a40507f37b45ad2feb3f4a06c4cbfbf00fd72a7b5ee43b7ca7445a0d4b66f7fCopy

payload

{
  "ModifyOrder": {
    "new_size": 202153100,
    "order_id": 51213345,
    "new_price": null
  }
}