{
  "manageEntity": {
    "action": "Save",
    "entityId": "2059238796",
    "entityType": "Track",
    "nonce": "0x52ed351f835f821a02694c7952c1b0625f1d9882161b5c1781306fc72d0af11d",
    "signature": "0x9f1428ca817c34acf75a3b756741ca91001fbdf385b2b2b2ea75d5708bd37faa5c1aff8d9849aa8589677293ea761774189c0659f1ab934e7fcbc639dcd54f3c1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}