tx 0x791cd65de91fd9adeb4ff4dd08d5714e58707ca6002723e68e4d04ee044f3916Copy

order would be filled (post-only rejected)

{
  "ModifyOrder": {
    "new_size": 3916593709,
    "order_id": 388375041,
    "new_price": 6404000000
  }
}