{
  "manageEntity": {
    "action": "Save",
    "entityId": "1411706177",
    "entityType": "Track",
    "nonce": "0x1b7391aaa6ca0bf74828b14adebfdf50d83c7292e124dce29426d19f7881da21",
    "signature": "0xc57784b3292c53d71fc8e7d3162aa8e8f23a8e90b91da8a16787fe75d0e3c23b1ab1a955d25082c707b2aff3604f7826ce28550aec7d3fcf5689ca3200dff28e1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}