tx 0x7551eddba661ca53a03774a8341a56a7a73e8e11cdcfad321805671e88dea23dCopy

order would be filled (post-only rejected)

{
  "ModifyOrder": {
    "new_size": 3886339997,
    "order_id": 388375041,
    "new_price": 6420000000
  }
}