tx 0x67eb356daa415324d3ee5fe341ecb71f5ad69181eed21a2b573c6a50c28bc22aCopy

order would be filled (post-only rejected)

{
  "ModifyOrder": {
    "new_size": 3868309910,
    "order_id": 388375041,
    "new_price": 6409000000
  }
}