Can't decode a transaction which has used encode for signing?

[yannickrocks]

Why does the decode function not work for encodeForSigning

here is a basic transaction I have encoded for signing but then when I try to decode it, it throws the error show

{
    "TransactionType": "Payment",
    "Account": "rMFg63bQtKCNQiJt5JSKoGvbcVm2MMu1Bv",
    "Destination": "rD3SybPcGeFuM5sPXuBJu739C6qr5kYeke",
    "Amount": "1000000",
    "Sequence": 2268372,
    "Fee": "12",
    "LastLedgerSequence": 3006397
}

binary-parser.js:126 Uncaught (in promise) Error: Cannot read FieldOrdinal, type_code 0 out of range

What am I missing?

[mvadari]

It has a different prefix and includes a different set of fields. It might work if you remove the 0x54584e00 at the beginning.