export interface Payload {
    user_id?: string;
    currency?: string;
    transaction_id: string;
    value?: number;
    affiliation?: string;
    coupon?: string;
    shipping?: number;
    tax?: number;
    items?: {
        item_id?: string;
        item_name?: string;
        affiliation?: string;
        coupon?: string;
        currency?: string;
        discount?: number;
        index?: number;
        item_brand?: string;
        item_category?: string;
        item_category2?: string;
        item_category3?: string;
        item_category4?: string;
        item_category5?: string;
        item_list_id?: string;
        item_list_name?: string;
        item_variant?: string;
        location_id?: string;
        price?: number;
        quantity?: number;
    }[];
    user_properties?: {
        [k: string]: unknown;
    };
    params?: {
        [k: string]: unknown;
    };
}
