get signed tx by type.transactions

func (t *Txn) SignedTxn() string {
    tx, _, err := eth.EthClient.TransactionByHash(context.Background(), common.HexToHash(t.Params.Result.TxHash))
    if err != nil {
        return ""
    }
    bs, err := tx.MarshalBinary()
    if err != nil {
        return ""
    }
    return hexutil.Encode(bs)
}

context

After get signedRawTx, it can be use to send by rpc like

{"jsonrpc":"2.0","method":"eth_sendRawTransaction","params":["0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"],"id":1}