{
  "manageEntity": {
    "action": "Save",
    "entityId": "342480452",
    "entityType": "Track",
    "nonce": "0xf0fbb0775e92bfbf9823d4ac57b0d3246959352621c14d2f2c23d05e415b8fbe",
    "signature": "0xd1fa700deba1eed565ba51773c2bcd26570f29a6ecdda0dcbfd9814de00de4582d1d6de50176bf68926471e987450a167380fe5bd8231629caf87a895c22c75f1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}