{
  "manageEntity": {
    "action": "Save",
    "entityId": "104715071",
    "entityType": "Track",
    "nonce": "0x778e85c5772b3bb88a6fe659a738b8ae17dc62d4f10f60be49699547c8081d5b",
    "signature": "0xda73c67b9e5bd0716ece356bb1458acd0935abf42df1073e98202e733c148f09308707024c154a7fd73197a95f7322817f098ad13fdca6af411f5667693710db1c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}