{
  "alg": "ps256",
  "private_key": "ps256.pem",
  "sign_cert": "ps256.pub",
  "ta_url": "http://timestamp.digicert.com",
  "claim_generator": "TestApp",
  "title": "My Title",
  "assertions": [
    {
      "label": "stds.schema-org.CreativeWork",
      "data": {
        "@context": "https://schema.org",
        "@type": "CreativeWork",
        "author": [
          {
            "@type": "Person",
            "name": "Joe Bloggs"
          }
        ]
      }
    },
    {
      "label": "c2pa.actions",
      "data": {
        "actions": [
          {
            "action": "c2pa.opened"
          }
        ],
        "metadata": {
          "reviewRatings": [
            {
              "code": "c2pa.unknown",
              "explanation": "Something untracked happened",
              "value": 4
            }
          ]
        }
      }
    },
    {
      "label": "my.assertion",
      "data": {
        "any_tag": "whatever I want"
      }
    }
  ]
}