{
"manageEntity": {
"action": "Save",
"entityId": "1498107242",
"entityType": "Track",
"nonce": "0x10f5b2e729e1807cf3fcd6cff116398d2190882310b6e4f86ebcc914e175f76a",
"signature": "0xd51f19a20d40ebf9ae9b167f9b15cc24790f7fdb2d0a51c0e841a04db5bf126f1cd0eb35e86c0e9ec5ec0b1762286f3199ef16e6db62f2d55f3c1ca5599163411c",
"signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
"userId": "881446128"
}
}