{
"manageEntity": {
"action": "Download",
"entityId": "1398377779",
"entityType": "Track",
"nonce": "0x534b5c86f75761aca8c8397a9ca4b1aacfdcf6a105f9d2cbd89dbf2ddfbea9b4",
"signature": "0xa2ea384d909eede499487197bb3517fb612e49dd69af04a96a03ddc477a4cb15379d2bd3721d190c0633b305bbc89b10ae648032ebb459ab3f0ff1fcccbe85091b",
"signer": "0xF1fC1d1C5e0Fa2C37eb724f58476fFAff5ADbDdb",
"userId": "557158813"
}
}