Request: BasePrivateWsRequest<"add_order", {
    cash_order_qty?: number;
    cl_ord_id?: string;
    conditional?: {
        limit_price?: number;
        limit_price_type?: "static" | "pct" | "quote";
        order_type:
            | "limit"
            | "stop-loss"
            | "stop-loss-limit"
            | "take-profit"
            | "take-profit-limit"
            | "trailing-stop"
            | "trailing-stop-limit";
        trigger_price?: number;
        trigger_price_type?: "static" | "pct" | "quote";
    };
    deadline?: string;
    display_qty?: number;
    effective_time?: string;
    expire_time?: string;
    fee_preference?: "base" | "quote";
    limit_price?: number;
    limit_price_type?: "static" | "pct" | "quote";
    margin?: boolean;
    no_mpp?: boolean;
    order_qty: number;
    order_type:
        | "limit"
        | "market"
        | "iceberg"
        | "stop-loss"
        | "stop-loss-limit"
        | "take-profit"
        | "take-profit-limit"
        | "trailing-stop"
        | "trailing-stop-limit"
        | "settle-position";
    order_userref?: number;
    post_only?: boolean;
    reduce_only?: boolean;
    sender_sub_id?: string;
    side: "buy" | "sell";
    stp_type?: "cancel_newest" | "cancel_oldest" | "cancel_both";
    symbol: string;
    time_in_force?: "gtc" | "gtd" | "ioc";
    triggers?: {
        price: number;
        price_type?: "static" | "pct" | "quote";
        reference?: "index" | "last";
    };
    validate?: boolean;
}>

Reference: Add Order