{
  "manageEntity": {
    "action": "Save",
    "entityId": "1164304886",
    "entityType": "Track",
    "nonce": "0x5b73649187206a9e854165443aa0a9799ad8aa4f36149391616263fe1ced93b1",
    "signature": "0x25983e64f6d05c7a88f99a6f4af963d670e005a8c638bdbe6ebe03f074063ed33882c442d7e02f822fd83a4ebb846f041104792c774c3477b99cc143ba4584c01c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}