{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1559552059",
    "entityType": "Track",
    "nonce": "0x969d2eb66d40f44878e9da7d635a9b5efb8d0eb0e1cff72577b331056c431021",
    "signature": "0xd6e0dfa2ec2a503c2424ee2741274d988ab86a39868313342c3ca78057b101690527e385d126b37e7e434f99f0a0877546fad02f02242ee4d0267ea3f97d85891c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}