tx 0x0b5c21eacc4b4ccd6d1c4ba8b8a6af02ecc872dc15d99bc8d8a4b00021e849f1Copy

order would be filled (post-only rejected)

{
  "ModifyOrder": {
    "new_size": 6406162694,
    "order_id": 388157274,
    "new_price": 6519000000
  }
}