{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "817891",
    "entityType": "Track",
    "nonce": "0x0a070834ab271ddf82bd7133a38dd0a93d4149bee6f6cdc67edd629fd6e7f75a",
    "signature": "0xea8cc257bedf775b13591156a5e8c8684f2bd873e01d6e26386f8a341e196cc93c0dd99e84d01bee08734f22ea0cb19f197aef0fb7e06e3d412dd20edfece8ca1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}