tx 0x399c0278c2c315bc9b172bc7c4230d2eb46dfa2a62973c4661b2f8ea69d5b65dCopy

reduce-only order has no opposing position

{
  "ModifyOrder": {
    "new_size": 4152409409,
    "order_id": 351964939,
    "new_price": 6174000000
  }
}