Result: {
    asset_class?: string | null;
    currency: string;
    fees?: {
        [pair: string]: FeeTierInfo;
    };
    fees_maker?: {
        [pair: string]: FeeTierInfo;
    };
    inputs: {
        domain_assets_on_platform: string;
        domain_futures_volume_30d: string;
        domain_spot_volume_30d: string;
    };
    schedules?: {
        class: string;
        pair: string;
        tiers: {
            active?: boolean | null;
            maker_fee: string;
            min_assets_on_platform?: string | null;
            min_futures_volume?: string | null;
            min_spot_volume?: string | null;
            taker_fee: string;
        }[];
    }[];
    volume: string;
    volume_subaccounts?: {
        iiban: string;
        volume: string;
    }[];
}

Reference: Get Trade Volume