{
"manageEntity": {
"action": "Save",
"entityId": "1662917294",
"entityType": "Track",
"nonce": "0x275419ea4a938622aac0d5af5c9b4eedf5c993d53cb65d969881b86082aa333f",
"signature": "0xff28831c8da7567398378238fee65cacc38991a86eb213837bca689f4dd626035634b44e6f1081680ec3492ff94a09c54e3e324108f61c354cf18f06f87258841b",
"signer": "0xa4F2b7C5923c7C3cea6ABbe732D1556A9a36960E",
"userId": "313524"
}
}