vscode-extension-samples/custom-editor-sample/exampleFiles/example.cscratch

{
  "scratches": [
    {
      "id": "8lYOoWqz2rHtPuhvnZ43eMx1mG6WnFrm",
      "text": "😸",
      "created": 1584577931699
    },
    {
      "id": "aZ57bJUEaXZ5wuBAX6NfGuj85Y6iw84N",
      "text": "😻",
      "created": 1584577933329
    }
  ]
}