```adf
{
  "attrs": {
    "language": "adf"
  },
  "content": [
    {
      "text": "{\n  \"type\": \"blockCard\"\n}",
      "type": "text"
    }
  ],
  "type": "codeBlock"
}
```

````adf
{
  "attrs": {
    "language": "adf"
  },
  "content": [
    {
      "text": "```",
      "type": "text"
    }
  ],
  "type": "codeBlock"
}
````