tx 0x7cbb230e4d971c16b733ce9ec000baaf5001a04440ef7f859c3a0ba6a138e53eCopy

order would be filled (post-only rejected)

{
  "PlaceOrder": {
    "side": "Long",
    "size": 5000000,
    "price": 21815000000,
    "market_id": 1,
    "post_only": true,
    "stop_loss": null,
    "account_id": 27,
    "order_type": "Limit",
    "reduce_only": false,
    "take_profit": null,
    "time_in_force": "GTC",
    "trigger_price": null
  }
}