{
  "manageEntity": {
    "action": "Save",
    "entityId": "83773",
    "entityType": "Track",
    "nonce": "0xee6defc276dffce4ee24253b5dce22e194c6fdb45445560798cccc99e1209c2f",
    "signature": "0xb2394e02325d4743309719fa432e40946fb9e7a53ee8a79b31445adca93644f823e4fabf7693b54b6186254880b95c0abe89e9c894ba9db03f27e0233dd35d9e1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}