{
  "manageEntity": {
    "action": "Save",
    "entityId": "1042011263",
    "entityType": "Track",
    "nonce": "0xfb483f85f82f79aa6fb87305a5156d1f858e50b2e08e3e58fd04f72be6e84fcc",
    "signature": "0x4754054de7697c5c98a4766b8757882d97be1c15de0972a654d75ed03396ff061378fc6758a301b76b7bed55e1d9ca4ce10496d17b88fa3a38bcdfabf452b2721c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}