{
"manageEntity": {
"action": "Save",
"entityId": "108897281",
"entityType": "Track",
"nonce": "0x67a5fb487c412d99a4d8f36bc280fa273fb6b9fc49546fcf66da92888a2cd009",
"signature": "0xf3133aec9f60d2c7b52b469077d7ccce109b32cad2d64a90fa25994bcf5baaed16edca65e386f01462773171616b97e3270a24028211d2d5da632579395f7cf31c",
"signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
"userId": "620307004"
}
}