export declare class SendFirebaseNotificationDto {
    title: string;
    body: string;
    /**
     * Let's take a comment as example
     *
     * type: 'information'
     * topic: 'comments.mention' (what is this)
     * entityType: 'comments' (what does it relate to)
     * id: 'c99ec992-ddcb-4ce8-9f0a-06a84052fb74' (comment ID)
     * parentEntityType: 'tasks' (if the comment relates to a "higher" entity)
     * parentId: '326daf6f-c05d-4598-a8ae-fbf11854c315'
     */
    data: {
        type: string;
        topic?: string;
        id?: string;
        entityType?: string;
        parentId?: string;
        parentEntityType?: string;
    };
    channelId?: string;
    badge?: string;
}