Send in a new order.
HMAC SHA256 signature authentication for v1 endpoints
BUY, SELL LIMIT, MARKET, STOP, TAKE_PROFIT, STOP_MARKET, TAKE_PROFIT_MARKET, TRAILING_STOP_MARKET BOTH, LONG, SHORT GTC, IOC, FOK, GTX true, false true, false MARK_PRICE, CONTRACT_PRICE true, false ACK, RESULT Order placed successfully