{
  "manageEntity": {
    "action": "Save",
    "entityId": "1411939390",
    "entityType": "Track",
    "nonce": "0x62ed0aa0f47bd5ae92c1dba43b0e06ce3d033303e84c897b298e4d13309dce75",
    "signature": "0xc182ae88ab4ebf5e0b73ba5b4fba77de89fbeefe3e5ac5c8ff7965633dbc816471978c24774f830c2c10132ec9bb8647629001c3d305c32610e7cc5dbd2cc4941b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}