{
"manageEntity": {
"action": "Save",
"entityId": "506332162",
"entityType": "Track",
"nonce": "0x97ef61cfe6938770700ffb31a73ffa4d8fdc0d9e8939362b8da9db87112e9aa5",
"signature": "0x103a9bbc28a59e129aae3a767c40b648274b1212716cc38f09521ecf61ee6cdd495228f867ae50a34424e4c874a1b6d834345e8ab78bdb039423f99fb5aa5be71b",
"signer": "0x4dafC3e774A1033C5604372f17ccBDcE545f478D",
"userId": "889450527"
}
}