tx 0x4784b2f141ff8bad54df919e6a0119df2a6d123b12ab6eb8f699b0c8bdf57380Copy

order would be filled (post-only rejected)

{
  "ModifyOrder": {
    "new_size": 3920883230,
    "order_id": 388375041,
    "new_price": 6399000000
  }
}