{
"manageEntity": {
"action": "Save",
"entityId": "353241212",
"entityType": "Track",
"nonce": "0x15cf724c016c648aac26d30e4d8b83c39dc0610abdb7e343a722fa6b6af7e564",
"signature": "0xcffedac6e4dbcc590f7ca5599cc5f551003e436d39893211402404d1e3ac326e768fd1b81f5a6897376a4bb03b5a62c27fd2e2bcd7a08d3f655ce75c9289f5df1b",
"signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
"userId": "35918963"
}
}