tx 0x56cba85989500e68829e2dbdab96976812aff0c663a4e0cf47144999bf6cef26Copy

order would be filled (post-only rejected)

{
  "ModifyOrder": {
    "new_size": 1597351955,
    "order_id": 388375041,
    "new_price": 6400000000
  }
}