{
  "manageEntity": {
    "action": "Save",
    "entityId": "80100430",
    "entityType": "Track",
    "nonce": "0x2bf39805aecaaeabcf6d6f403ed4cb9207398e83a92de4c5dd13093b559e4388",
    "signature": "0xfe5c1f00fb5d1782a3e4c5532641e4ba311469e689bffc99bc78851e6a22b2f269e66b1e1b9010375b79683bf7e842a2a4c202759ca0cb59d4ef90aa558ed0481b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}