{
  "manageEntity": {
    "action": "Save",
    "entityId": "1690112707",
    "entityType": "Track",
    "nonce": "0x9a8b190acd02dd763f7f8bb41f5fa2a3fd88d03a3223715905b9a22667eded2b",
    "signature": "0xb2f63ce7f325fdf70cbadaf352d54147a1658938b3cf7359cb1432f09239846351e2b6c0427528de9c2fe6ed4f1d6b98d29a39118c92a1543987e2527afdf8981b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}