{
"manageEntity": {
"action": "Save",
"entityId": "798867083",
"entityType": "Track",
"nonce": "0x54d0b63b17a6bfbd7e26519557a62553d9bb1b940eb0131349956914b0fab55a",
"signature": "0x4af3d80aa82ce82a4d9d0fe9a1b11f7d8adc99eca8f5a3004ac12e3a3fcf344301eaf73bfe6fb18559fb4a328da031cab57c76f34896aa5a3c88b8c4d91cc2a11c",
"signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
"userId": "620307004"
}
}