{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1984515407",
    "entityType": "Track",
    "nonce": "0xe748f1af84573306ce488eb50e5203c9ed1d24d17b06e8b565869d3839185104",
    "signature": "0x75234155dc1b7919a95e596b69eb2fd86ef4c6342f1ff00f3465ce381a94029b14df1c04ba3a79f35b7a3f8f5223fd7f0e9a8abf5bb78691b886b9bf23d958331c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}