{
  "manageEntity": {
    "action": "Save",
    "entityId": "252014",
    "entityType": "Track",
    "nonce": "0xa92adcdda60ada19bf90cfd8b4ce329ccab9fd4fc80cfb027cc7feb76b33015f",
    "signature": "0x5fa892e03a6024a85f99f6df11d53d7386c9ed12fa8144d32558f1ac35cf093f31b8033e7e8faffe1edbed79eda504dc16d04855b21f7ec59eff1c7e8d4d12161c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}