sample toc json in canner

test.json

{
  "layout": "layout.hbs",
  "filename": "filename.html",
  "data": {
    "toc": "<md string>",
    "content": [
      {
        "title": "why",
        "content": "<md string>",
        "stage": 1
      },
      {
        "title": "more",
        "content": "<md string>",
        "stage": 2
      }
    ]
  }
}