[
  {
    "description": "treehash per file",
    "signed_content": {
      "payload": "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",
      "signatures": [
        {
          "header": {
            "kid": "publisher"
          },
          "protected": "eyJhbGciOiJSUzI1NiJ9",
          "signature": "SJbK-LSwY405PcYfkpnd_Kd3d3UUl5yQUxzzs0pPxcuhkHqzxIc4b2KF8VMax1v6XSXNQEZ9INt_TqP-YRBluK7Bl0GRfQ1SeCSxuQJfU4gOx1bTUmaOKLutuQyMGhOMoqD-cxOLXqwS6Uh6EXz2Tj4vwmRfhlbxoQe4E3Wh32FaX3OmR4B3ZpmGVzLlc7h062HwDhq7ONFKM1pRnDQeWNvqSOtNCx4khjiTZSmN4VA5mBx26SOCUEr40JYnU0CU_sQhemvo_4HS8GkF0xT3ecUmqJSvu-2f69d7CLV8owUOdt1iuZmVx9jVPSaL4KrAg5aAKaZSaSVT6OJbMhBKJg"
        },
        {
          "header": {
            "kid": "webstore"
          },
          "protected": "eyJhbGciOiJSUzI1NiJ9",
          "signature": "FHzKU4znTyzjiMIzv09mbU-YLdo8T0M7mDnbvh3MHRZkOayL3er0-HGu308pKMDoZ2CkYzinJxU9i-jCVQwp0uaoUd7KAMsoe8heau1Irxdp0xovCgSA8-MDq2yn2pYqK94VyG95Isn-YkTqLnQN2QyFEq4ZMVJWJ0E3fJXTxYZoMfiE5mD5ZZLKpv1_c29qBFXIUD7-5PsDMxa7yPhx8BUPP_oHpoq9KpiyE24rCZ2wslk-z1hpAaXWZNURn6AlJJgpwRnCgZJbFX2fBmVyqJUEZ2qqH4WeoPmGD-vfmLzewOoUSX-5gsMstuUbjXAL28CLh8MudcDIBqKCHlOfbQ"
        }
      ]
    }
  }
]