{
  "manageEntity": {
    "action": "Save",
    "entityId": "1040410534",
    "entityType": "Track",
    "nonce": "0xdde165296cae076005caaceea5439afc0e93a9bfeea488bbb647d35b610e9804",
    "signature": "0xc1bda3a2fc39c400196474d6433fbd8eb74daa964c6240c3e3cd429a9180ca670da2d68f6b65ac4349a5568fcf4c4a7f0229b9dfe6e67e415d5a4902a5ca99051c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}