export interface Payload {
    event_source: string;
    event: string;
    event_id?: string;
    timestamp?: string;
    phone_number?: string[];
    email?: string[];
    advertising_id?: string;
    app: {
        app_id: string;
        app_name?: string;
        app_version?: string;
    };
    ad?: {
        callback?: string;
        campaign_id?: string;
        ad_id?: string;
        creative_id?: string;
        is_retargeting?: boolean;
        attributed?: boolean;
        attribution_type?: string;
        attribution_provider?: string;
    };
    device_details?: {
        device_type?: string;
        device_id?: string;
        device_version?: string;
        ad_tracking_enabled?: boolean;
    };
    external_id?: string[];
    locale?: string;
    att_status: string;
    ip?: string;
    user_agent?: string;
    contents?: {
        price?: number;
        quantity?: number;
        content_category?: string;
        content_id?: string;
        content_name?: string;
        brand?: string;
    }[];
    content_ids?: string[];
    num_items?: number;
    content_type?: string;
    currency?: string;
    value?: number;
    description?: string;
    limited_data_use?: boolean;
    test_event_code?: string;
    search_string?: string;
}
