{
  "manageEntity": {
    "action": "Save",
    "entityId": "1270172418",
    "entityType": "Track",
    "nonce": "0xf0c978de8dc01db3a6db64449c3e1ac584da1da366396678e6a4d691407d31bd",
    "signature": "0x6e37c16b36f9b82254ac127bb42b7799a8fbe7420534259fc776d2165e4293af743226a74ca3eb9405b063e050dd5288d1ccc205cc41c9ad2ce227323d6d9df41b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}