{
  "manageEntity": {
    "action": "Save",
    "entityId": "1609840381",
    "entityType": "Track",
    "nonce": "0x569469791c71019fec9ef2b53948b6b39c61226df2a282e0ff90680550bec2f7",
    "signature": "0x3d534a542f9c38ae3128aa8f2e2282c33d98590488b878a0b05649e63eef66c87fa939feab91b03792e41fd439b2f7001c7ae75262a9f458848679bfab5ede291b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}