export interface Payload {
    user_identifiers: {
        anonymousId?: string;
        userId?: string;
        email: string;
        optimizely_vuid?: string;
        fs_user_id?: string;
        web_user_id?: string;
    };
    event_action: string;
    campaign: string;
    campaign_id?: string;
    link_url?: string;
    timestamp: string;
    enable_batching?: boolean;
    batch_size?: number;
}
