Android Studio NFC reading data, removal of the prefix en

Question

I'm working on an nfc scanner and have come across a problem. When displaying tag data, the prefix "en" appears, for example: enKeyboard. I would like it to display Keyboard itself. How can I do this? The code below:

override fun onTagDiscovered(tag: android.nfc.Tag?) {
         val test = findViewById<TextView>(R.id.test)
         val mNdef = Ndef.get(tag)

         if (mNdef != null) {
             val mNdefMessage = mNdef.cachedNdefMessage

             val firstRecord = mNdefMessage.records[0]
             val test123 = firstRecord.payload

             test.text = test123.toString(charset("UTF-8"))

         }


     }