{
  "manageEntity": {
    "action": "Save",
    "entityId": "1815543230",
    "entityType": "Track",
    "nonce": "0xce262c462e3c18697e6d13f377c0dd108c191c8e9e033f5a45ada6c387bbd516",
    "signature": "0x5ac3b4f07a1dda6dfd816ccc46a281b7665bc475e4fd7ed559564994532b5809664b9f1368703827a1d14e191e620e12eb42556af98e1a732c5b97390720d1ac1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}