{
  "type": "root",
  "children": [
    {
      "type": "paragraph",
      "children": [{ "type": "text", "value": "Before" }]
    },
    {
      "type": "thematicBreak",
      "children": []
    },
    {
      "type": "paragraph",
      "children": [{ "type": "text", "value": "After" }]
    }
  ]
}