tx 0x28fd9d0e96b2b21dd5b99ca133271e56502a9e33d7664e6274137bbe40f2de16Copy

order would be filled (post-only rejected)

{
  "ModifyOrder": {
    "new_size": 3871325901,
    "order_id": 388375041,
    "new_price": 6421000000
  }
}