{
  "document_id": "1234567890abcdef",
  "comment": {
    "content": "This needs revision",
    "location": {
      "index": 150,
      "length": 25
    }
  }
}

{
  "document_id": "1234567890abcdef",
  "comment": {
    "content": "Please review this section",
    "location": {
      "index": 200,
      "length": 50
    }
  },
  "tag_users": ["user@example.com", "reviewer@example.com"]
}

{
  "document_id": "1234567890abcdef",
  "comment": {
    "content": "Suggested change: improve clarity",
    "suggestion": {
      "insertText": "clearer explanation",
      "deleteText": "current text"
    },
    "location": {
      "index": 300,
      "length": 11
    }
  },
  "suggestion_mode": true
}

{
  "type": "text",
  "content": "Regular comment"
}

{
  "type": "suggestion",
  "content": "Suggested change",
  "changes": {
    "from": "original text",
    "to": "suggested text"
  }
}

{
  "type": "reply",
  "content": "Reply to previous comment",
  "parent_id": "comment123"
}