{
  "content": [
    {
      "content": [
        {
          "marks": [
            {
              "type": "underline"
            },
            {
              "attrs": {
                "href": ":a{"
              },
              "type": "link"
            }
          ],
          "text": "x",
          "type": "text"
        }
      ],
      "type": "paragraph"
    },
    {
      "content": [
        {
          "marks": [
            {
              "type": "underline"
            },
            {
              "attrs": {
                "href": "y",
                "title": ":a{"
              },
              "type": "link"
            }
          ],
          "text": "x",
          "type": "text"
        }
      ],
      "type": "paragraph"
    },
    {
      "content": [
        {
          "marks": [
            {
              "type": "underline"
            },
            {
              "attrs": {
                "href": ":a[]{"
              },
              "type": "link"
            }
          ],
          "text": "x",
          "type": "text"
        }
      ],
      "type": "paragraph"
    },
    {
      "content": [
        {
          "marks": [
            {
              "type": "underline"
            },
            {
              "attrs": {
                "href": "https://example.com/?q=:emoji{"
              },
              "type": "link"
            }
          ],
          "text": "x",
          "type": "text"
        }
      ],
      "type": "paragraph"
    },
    {
      "content": [
        {
          "marks": [
            {
              "type": "underline"
            },
            {
              "attrs": {
                "href": "ab:c{"
              },
              "type": "link"
            }
          ],
          "text": "ab:c{",
          "type": "text"
        }
      ],
      "type": "paragraph"
    }
  ],
  "type": "doc",
  "version": 1
}