TRON signing

{
  "blockchainKind": "Tron",
  "kind": "Transaction",
  "transaction": "0x0a83010a0228222208b142ad939b228d784090a7eaa9cf315a65080112610a2d747970652e676f6f676c65617069732e636f6d2f70726f746f636f6c2e5472616e73666572436f6e747261637412300a15419d31b91d72b58d7c8c02a7124410e168989f372d12154102a69d5d85c05864dc6fd74f57db3fa37aff7b94180170b0d2e6a9cf31"
}

const TronWeb = require('tronweb')

const walletId = 'wa-6lbfv-9esgj-xxxxxxxxxxxxxxxx'
const wallet = await dfnsClient.wallets.getWallet({ walletId })

const transaction = await tronWeb.transactionBuilder.sendTrx('TADDx31pdCFfp3XrYxp6fQGbRxriYFLTrx', 1000, wallet.address)

const txPb = TronWeb.utils.transaction.txJsonToPb(transaction)

const res = await dfnsClient.wallets.generateSignature({
  walletId,
  body: {
    kind: 'Transaction',
    transaction: `0x${TronWeb.utils.bytes.byteArray2hexStr(txPb.serializeBinary())}`,
  },
})

{
  "blockchainKind": "Tron",
  "kind": "Message",
  "message": "0x49206c6f76652044666e73"
}