Function parse_usdm_instrument 

pub fn parse_usdm_instrument(
    symbol: &BinanceFuturesUsdSymbol,
    ts_event: UnixNanos,
    ts_init: UnixNanos,
) -> Result<InstrumentAny>

Parses a USD-M Futures symbol definition into a Nautilus CryptoPerpetual instrument.

Errors

Returns an error if:

• Required filter values are missing (PRICE_FILTER, LOT_SIZE).
• Price or quantity values cannot be parsed.
• The contract type is not PERPETUAL.