tx 0x1e2bcc920b3d5fc054509bf3544ebb5eabdd59e663740c67931e4fe00999986fCopy

order would be filled (post-only rejected)

{
  "ModifyOrder": {
    "new_size": 3917817644,
    "order_id": 388375041,
    "new_price": 6399000000
  }
}