Enter a Heading
{
"article": {
"id": "string (uuid)",
"slug": "string",
"title": "string",
"content": "string", // markdown or html
"format": "markdown|html",
"published_at": "ISO date",
"main_image_url": "string"
},
"main_image": {
"url": "string", // same as article.main_image_url
"alt": "string"
},
"website": {
"id": "string (uuid)",
"baseUrl": "string"
},
"timestamp": "ISO date"
}