{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1476897579",
    "entityType": "Track",
    "nonce": "0x28e0f1ced9cd19cd3ea51bd783fc3a10eb9404f373990a925a887ff09d0de204",
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    "signer": "0xDAE8fcfd9cFf9ae8d010DCA6C869f3E8436A8A80",
    "userId": "649866856"
  }
}