{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1494487030",
    "entityType": "Track",
    "nonce": "0xdceeedcd9ea3e3f17714497adbb2f6c5a8daa7816bf5fd74023cc0f8549ab26b",
    "signature": "0x82c41475ce15506529403d8257b482666356be2af742b408393b547514fb5fb76c8cd167111f9c050c2d954aa8123742f8c1f8d78c9e1bac72ab0c8f185bc98a1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}