tx 0x4a1fe55c8f2463e6b2059d7d8b5db917d0cc22b280123c6e6e0d9f9e8bb3c8bbCopy

payload

{
  "ModifyOrder": {
    "new_size": 1933591,
    "order_id": 21029783,
    "new_price": null
  }
}