{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "389310019",
    "entityType": "Track",
    "nonce": "0xcfdb580df55be1e45fef477821842d7b60f58ddb3f3cff5923f90c64f241ecf9",
    "signature": "0xc29f1910abdd4a174ed6df919957434f733c685bd23b3ee7c85733ff22347b863e269ea45e53d5a9ada2b2f100b5f8612f758311e8e79104668f5b1175b83b351c",
    "signer": "0x061A60900C738C67bcf3F9Cb7Fe8f703DbEc8Ee0",
    "userId": "718327235"
  }
}