tx 0x91f1973271794196b8ef0e71b9e104cd3419151ce53e8f0fe63723f3d3ce711fCopy

order would be filled (post-only rejected)

{
  "ModifyOrder": {
    "new_size": 3927028815,
    "order_id": 388375041,
    "new_price": 6385000000
  }
}