{
  "manageEntity": {
    "action": "Save",
    "entityId": "1805640468",
    "entityType": "Track",
    "nonce": "0xd88ee26f61d21282caf46c4d79439e663dbf574adf62cf6de9cc69e3be64abba",
    "signature": "0x31f154882a2fc3c3570b61c776c73a926437d03f22fb75adf4bc1e314878779a52223b6f2517333f8cdae7c325c2ffce9a991ef98e1c9332cca4292ae92292701c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}