Subaccount trades

{
  "id": 1,
  "method": "subscribe",
  "params": {
    "channels": [
      "orderbook.ETH-PERP.10.20"
    ]
  }
}

{
  "method": "<string>",
  "params": {}
}

{
  "direction": "<string>",
  "expected_rebate": "<string>",
  "extra_fee": "<string>",
  "index_price": "<string>",
  "instrument_name": "<string>",
  "is_transfer": true,
  "label": "<string>",
  "liquidity_role": "<string>",
  "mark_price": "<string>",
  "op_uuid": "<string>",
  "order_id": "<string>",
  "realized_pnl": "<string>",
  "realized_pnl_excl_fees": "<string>",
  "subaccount_id": 123,
  "timestamp": 123,
  "trade_amount": "<string>",
  "trade_fee": "<string>",
  "trade_id": "<string>",
  "trade_price": "<string>",
  "tx_status": "<string>"
}