tx 0x8fd6b516061983dcf37945db935f8b681bc7d4f0e153655c6a3e4b42c77e5b81Copy

order would be filled (post-only rejected)

{
  "ModifyOrder": {
    "new_size": 6419977586,
    "order_id": 388157274,
    "new_price": 6496000000
  }
}