Response: signed_tx → signature

The envelope is unchanged — both v1 and v2 return V1Response { header, body }. Only the sign-result field name changed.

	v1	v2
signTransaction result	body.parameter.signed_tx	body.parameter.signature
getAddress result	body.parameter.address	body.parameter.address (same)

v1 parsing

const raw = res.body.parameter.signed_tx

v2 parsing

const raw = res.body.parameter.signature

info

Error handling is unchanged: failure → body.error.code (a string). See Error Codes.