diff --git a/accounts/external/backend.go b/accounts/external/backend.go
index 42eaf661cc..6f1581f9b8 100644
--- a/accounts/external/backend.go
+++ b/accounts/external/backend.go
@@ -205,7 +205,7 @@ func (api *ExternalSigner) SignTx(account accounts.Account, tx *types.Transactio
 		to = &t
 	}
 	args := &apitypes.SendTxArgs{
-		Input: &data,
+		Data:  &data,
 		Nonce: hexutil.Uint64(tx.Nonce()),
 		Value: hexutil.Big(*tx.Value()),
 		Gas:   hexutil.Uint64(tx.Gas()),
@@ -215,7 +215,7 @@ func (api *ExternalSigner) SignTx(account accounts.Account, tx *types.Transactio
 	switch tx.Type() {
 	case types.LegacyTxType, types.AccessListTxType:
 		args.GasPrice = (*hexutil.Big)(tx.GasPrice())
-	case types.DynamicFeeTxType, types.BlobTxType, types.SetCodeTxType:
+	case types.DynamicFeeTxType:
 		args.MaxFeePerGas = (*hexutil.Big)(tx.GasFeeCap())
 		args.MaxPriorityFeePerGas = (*hexutil.Big)(tx.GasTipCap())
 	default:
@@ -235,17 +235,6 @@ func (api *ExternalSigner) SignTx(account accounts.Account, tx *types.Transactio
 		accessList := tx.AccessList()
 		args.AccessList = &accessList
 	}
-	if tx.Type() == types.BlobTxType {
-		args.BlobHashes = tx.BlobHashes()
-		sidecar := tx.BlobTxSidecar()
-		if sidecar == nil {
-			return nil, errors.New("blobs must be present for signing")
-		}
-		args.Blobs = sidecar.Blobs
-		args.Commitments = sidecar.Commitments
-		args.Proofs = sidecar.Proofs
-	}
-
 	var res signTransactionResult
 	if err := api.client.Call(&res, "account_signTransaction", args); err != nil {
 		return nil, err