tx 0xc9a9980a6cca11b16c98361e8316d9b0515be7f7480d83f82b0bf0b3aaa3a0fcCopy

payload

{
  "ModifyOrder": {
    "new_size": 2900820,
    "order_id": 10554939,
    "new_price": null
  }
}