You can use our dynamic content feature with JSON feed.
{{"title": "Post Title","description": "Add what you need here as post content.","link": "https://domain.com/link-to-post","thumbnail": "https://domain.com/images/post.png"},{"title": "Post Title 2","description": "Add what you need here as post content 2.","link": "https://domain.com/link-to-post-2","thumbnail": "https://domain.com/images/post2.png"}}