{
"manageEntity": {
"action": "Save",
"entityId": "252060",
"entityType": "Track",
"nonce": "0x5fe21c8eb1659b27829293ae3fd703b22573e8740da59f2bb06eadc13540ca69",
"signature": "0x625e335d48a95591b480a86892af3dc6f17a516023b268d0df854b567fbd1c152ecad26039e6a8498bdb0c3a8df704a82d6a3807f06b3343f7229ed08b2c090c1b",
"signer": "0xa34Ced4F52f585b36D7A5c2e45906594B875e6CD",
"userId": "425430290"
}
}