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The quote response includes everything needed to sign. Forward signData.origin[] and signData.destination directly to your wallet’s signTypedData() — don’t reconstruct the EIP-712 types client-side.

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Origin signatures

signData.origin has one entry per source chain. Sign each entry in order. The signature index must match the entry index. 
const originSignatures = await Promise.all(
  signData.origin.map((typedData) =>
    walletClient.signTypedData(typedData),
  ),
);

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Destination signature

signData.destination is a single typed-data object. It’s used when the recipient differs from the sender (a smart account receiving tokens, for example, or destination executions that touch the recipient’s account). 
const destinationSignature = await walletClient.signTypedData(
  signData.destination,
);
If the destination doesn’t require a signature, this slot can still be sent — the orchestrator ignores it.

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Next steps

Submitting the intent

Submit the signed intent to the Orchestrator.