{
  "manageEntity": {
    "action": "Save",
    "entityId": "36054",
    "entityType": "Track",
    "nonce": "0xad0d00797d54adef43ce492ef9b63b48b2107ce3ddb4ab8d5471a91454206ec5",
    "signature": "0x666a68dde1eb944a1c30e03c37f60f4f568256b8c2fe1031ac06af756c095fb532e4a3c4df563e2221101686884a43b5c9a031095bcf179f9eee605f67b2eaec1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}