{
"manageEntity": {
"action": "Save",
"entityId": "1500432500",
"entityType": "Track",
"nonce": "0x0f3143c0e1fdc3645b7fd0757b5970a2c514fdfad50d6b8eb128354fc4a8d3c2",
"signature": "0x85105036805d6e09182249466da5b4af8ebd15f4a3023c4bd2447f1c684b4efa62b9d9b0c0a326968f0875212df1458693167fc5134f8d27878a488e6e7bf25b1c",
"signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
"userId": "614212580"
}
}