Cardano signing

{
  "kind": "Transaction",
  "transaction": "0x84a3008182582082544414292ededfa716ae42af007ecff823c58796cb9ba60330699fb4d55d7901018282581d60112f2721059581f2a8f9986638359b83c567a61d5486ed0e16c818621a000cf4ae82581d60112f2721059581f2a8f9986638359b83c567a61d5486ed0e16c818621b0000000253db20cd021a00028785a0f5f6"
}

import { BlockfrostProvider, Transaction } from '@meshsdk/core'

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

const provider = new BlockfrostProvider(process.env.BLOCKFROST_PROJECT_ID!)
const initiator = new CustomInitiator(wallet.address, provider)

const transaction = await new Transaction({ initiator })
  .sendLovelace('addr_test1vq5eele9enryyqkg4wrjyp7x4gpshvkr6rylkwtyau56g3qgrcks9', '1000000')
  .build()

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

{
  "network": "Cardano",
  "kind": "Cip8",
  "context": "Signature1",
  "payload": "0x49206c6f76652044666e73"
}