{
  "manageEntity": {
    "action": "Save",
    "entityId": "1053287202",
    "entityType": "Track",
    "nonce": "0x8a5544cfcfc223d44480b154ce170ffa6c88d90622bad1c67a0d4dbec88abf22",
    "signature": "0xd7d261440eb2ab13b2ca2895f530b4754e3bebc9269aded3960363d0c8fb06322911541921bc7226016d48be16085092d03a495f1ac0091c3cd8ba345ebf8f311c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}