{
  "manageEntity": {
    "action": "Save",
    "entityId": "1793577387",
    "entityType": "Track",
    "nonce": "0xe662a1efc9d7b5628c03203eead1f05d07dbd249aec403d83cb064e6788533b5",
    "signature": "0x485c883561549db5dd83c4ba5119a395f1d9d5ca4bbca6c9ce910892a7df92d6613ad11b7d02278b9571aa519dbb1fcc38668bfd5904c0b671100fd6b7ed96611c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}