{
  "manageEntity": {
    "action": "Save",
    "entityId": "103297",
    "entityType": "Track",
    "nonce": "0xd9eeccab599e0a7c53c886e9d8d4206df631ea7dad6b47ed8a069f3b10943e7d",
    "signature": "0x683d9e3a39d57d941e6c9ade384f93fb30d1aaf746a1be576c85f040625e494342b46480ef71f3d0790576467b6ee2be01df7aeaf21f98ffbf885b8288c33ed01c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}