{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "838835953",
    "entityType": "Track",
    "nonce": "0xfce54a4e47c772a7b983ee0378436fd6ea4092f8dbb8aaae9552ace6b028726b",
    "signature": "0x851fbc7689ffb3d69eab865cd0f627b78fdc9bb3957855722696f3eedda6383121f309b5a7e0ef68f300b0c52ed2fb00476b8f32659879bd1339a5251ed58c9b1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}