{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "443932",
    "entityType": "Track",
    "nonce": "0x5871ca579d4ae72275cc8d185e58a704eb4c997fbdb2910fad826fd93340e57e",
    "signature": "0x860fc9e310b0c97766a063bbb1cb1cee63b70f7b53c951c26734ab7edc29fb5e38dbd2649974d84e4c9508ac316a7f068e3e29b13808fab47a28bbab09f97e5d1c",
    "signer": "0x061A60900C738C67bcf3F9Cb7Fe8f703DbEc8Ee0",
    "userId": "718327235"
  }
}