{
  "manageEntity": {
    "action": "Save",
    "entityId": "208565234",
    "entityType": "Track",
    "nonce": "0xb7acb6f99c4933f3d7c9b4038fa5e13d62b08e3792a76e81c1bbbb12a9c42551",
    "signature": "0x2c6b855d0db0a51592919a54d815b49de7898393c9587b60d99a4712338c3e49580d808bd5616df56bb8b7def3f424f0037b25ba0ccc0fcabcca82e90776b31f1c",
    "signer": "0x367680E9B4EfE77a6636091FA6c2c71749Cf7C60",
    "userId": "40274"
  }
}