{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "457171226",
    "entityType": "Track",
    "nonce": "0x0180bcdfb167682b4c14b8670e1f4cab773405963cd04c56b386b717bbb93b48",
    "signature": "0xaa693cca0ce1c589adb401d4f5eaf30b1548f24f6e15f858f50a0b891259f5f54d42869f05793ed4d2e05afe8a32a7d788750b0c4911bc9b71048aeb5b32cbb31c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}