{
  "manageEntity": {
    "action": "Save",
    "entityId": "313682",
    "entityType": "Track",
    "nonce": "0x33ae0fd05ba827109434083b42041597c4b7c28fcc0dec8139b4da2078ecd7b2",
    "signature": "0x245a0a56efb81047f75bed5a47cd59ee0c68bb7538fd8c509eaf2b379fd277a365d9c9482301d8decd336b9e8622743785a439dd90fd86ac703ee1c1501c7ae01c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}