const sig = req.headers[HTTP_SIGNATURE.HEADER_NAME] as string
if (sig && sig.startsWith('Signature ') === false) req.headers[HTTP_SIGNATURE.HEADER_NAME] = 'Signature ' + sig
const sig = req.headers[HTTP_SIGNATURE.HEADER_NAME] as string
if (sig && sig.startsWith('Signature ') === false) req.headers[HTTP_SIGNATURE.HEADER_NAME] = 'Signature ' + sig