[
  {
    "description": "treehash per file",
    "signed_content": {
      "payload": "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",
      "signatures": [
        {
          "header": {
            "kid": "publisher"
          },
          "protected": "eyJhbGciOiJSUzI1NiJ9",
          "signature": "Nmoy7o7FQ5spm3sHwnlwmLr_HbelVP7CG9cOzQ4fSuv7xPVKDo2HP4IjenKyZobKLVsxZJxaYe4OpH3m5I7tJsQ3OoeqteU9Fy7UP_UNyuohyABkFg6wnbERDS1AeS7MXWaSfHro0Kov6CzaKpW4vi9G1LA9ddZKTtASsCwjUblSsq5ax-Fl54eon6ZscSVaJKW8Oo1OlF0WAcGcS62lIwM0Jrhe9wTEjfZocEp0GTS7L3Li-Q4q4Z8X3JXPD0Hlj42jn-KoYWvUAvMJ0C2lIcLIFPefqJSYwB1YItSmqXQOrRsScCDMA2b86R9Z1fuYtoIO0rBIm1GNO42jkPuYlA"
        },
        {
          "header": {
            "kid": "webstore"
          },
          "protected": "eyJhbGciOiJSUzI1NiJ9",
          "signature": "QGQAtME19BKVTt6tE7OJPtGjAB6txrZ1J13P7D0RmpOKVr_jGz6_-zWJtTWOFTU8J9OzdsHTmaTefhQ1Y1zcEEJI2s4Y8ZyzXFnff24RQi0sN8lKpciDf0ng7bGHYDWicnwm5x418RXtc74THP96LzeW727M_GpBTYSRjjA9Lov313IfsSLcuSUFT0NEGu_D7gw9pu-6UGGygdxpOsvlQLgtH3Y32VbsWxlV31_YCldhb46SUISyG3UEEqhLZgHHIcEb_mM9N_fePXDysGyuFx2Yl5zMeNVrvaal8-42t-tQP7geVioY7GvxUP0-jujX55mJRPD6P1LmJpDFy7Pw4g"
        }
      ]
    }
  }
]