{
"manageEntity": {
"action": "Save",
"entityId": "963568",
"entityType": "Track",
"nonce": "0xaaf7230a4413e7dc16aec1bc0c357de73a88dcc306917949167ab61cd6fd4ea4",
"signature": "0xc29b42f6c16552e088caae9ae89e22b83882681c54a45b6438bde0140ea71d8b6b080968bf1456762f6b79c65f6dae8f4a9db4ea9cc6149749946bdcd9d1db1d1b",
"signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
"userId": "881446128"
}
}