{
  "manageEntity": {
    "action": "Save",
    "entityId": "105357267",
    "entityType": "Track",
    "nonce": "0xbe2fb1183fd42cc30c71f821d20c3b8206a6ae3b8fb71d1322f3cbfb97f3cf19",
    "signature": "0xe28ea96098be04a3545f2cf7e695359abbce2257966a13d1a64b6a903a6006eb08ae960f60d601d950eea889873c56dfdd1af203e5fdd34a0a8b29fd4ff5fe151c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}