{
  "metadata": {
    "usageType": "http://id.tincanapi.com/attachment/supporting_media",
    "display": {
      "en-US": "Text attachment"
    },
    "contentType": "text/plain",
    "length": 18,
    "sha2": "bd1a58265d96a3d1981710dab8b1e1ed04a8d7557ea53ab0cf7b44c04fd01545"
  },
  "content": "some text content"
}