tx 0x484d3804feac1ab7c134c4c433b2dd43eba07ed42011c3e8bfec68cc51605a4fCopy

order would be filled (post-only rejected)

{
  "ModifyOrder": {
    "new_size": 3884620980,
    "order_id": 388375041,
    "new_price": 6421000000
  }
}