# Meta Transaction

## Built Meta Transaction

* Obtain the original `rawTransaction` information.
* Parse raw transaction to get fields like `nonce`, `gasprice`, `gaslimit`, `from address`, `to address`, `value`, `data`, etc.
* Take the above fields, as well as the fee discount percentage and other fields, and encode them in RLP format as follows for example.

> List result = new ArrayList(); 
>
> result.add(RlpString.create(nonce));
>
> result.add(RlpString.create(gasPrice)); 
>
> result.add(RlpString.create(gasLimit)); 
>
> result.add(RlpString.create(receiveAddress));
>
> result.add(RlpString.create(value)); 
>
> result.add(RlpString.create(data)); 
>
> result.add(RlpString.create(sendAddress)); 
>
> result.add(RlpString.create(feePercent)); 
>
> result.add(RlpString.create(blockNumber)); 
>
> result.add(RlpString.create(chainId));
>
> RlpList rlpList = new RlpList(result); 
>
> this.rlpEncodeData = RlpEncoder.encode(rlpList);

* Sign the above data by the fee proxy address.
* Replace the `data` filed in the original transaction with the signed data and re-encode it as `rawTransaction`.
* Broadcast `rawTransaction` to blockchain；


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