User trade notifications

{
  "trade_id": 123,
  "instrument_id": "<string>",
  "price": 123,
  "size": 123,
  "taker_wallet": "<string>",
  "maker_wallet": "<string>",
  "maker_order_id": 123,
  "taker_order_id": 123,
  "taker_side": "<string>",
  "timestamp": 123
}