{
  "schema": {
    "structure": "doc",
    "children": [
      {
        "structure": "Content",
        "required": true,
        "multiple": false,
        "children": [
          {
            "structure": "Title",
            "description": "公文标题",
            "required": true,
            "multiple": false
          },
          {
            "structure": "Addressee",
            "description": "主送机关",
            "required": true,
            "multiple": false
          },
          {
            "structure": "Text",
            "description": "公文正文",
            "required": false,
            "multiple": true
          },
          {
            "structure": "Heading2",
            "description": "二级标题",
            "required": false,
            "multiple": true
          },
          {
            "structure": "SignOff",
            "description": "签发单位",
            "required": true,
            "multiple": false
          }
        ]
      }
    ]
  }
}