declare namespace Entity {
    type Card = {
        url: string;
        title: string;
        description: string;
        type: 'link' | 'photo' | 'video' | 'rich';
        image?: string;
        author_name?: string;
        author_url?: string;
        provider_name?: string;
        provider_url?: string;
        html?: string;
        width?: number;
        height?: number;
    };
}