export interface Payload {
    campaign_id: string;
    send_id?: string;
    trigger_properties?: {
        [k: string]: unknown;
    };
    broadcast?: boolean;
    attachments?: {
        file_name: string;
        url: string;
    }[];
    recipients?: {
        external_user_id?: string;
        user_alias?: {
            [k: string]: unknown;
        };
        email?: string;
        trigger_properties?: {
            [k: string]: unknown;
        };
        send_to_existing_only?: boolean;
        attributes?: {
            [k: string]: unknown;
        };
    }[];
    prioritization?: {
        first_priority?: string;
        second_priority?: string;
    };
    audience?: {
        [k: string]: unknown;
    };
}
