Updates the email address and/or the name for a given signer on a signature request. You can listen for the signature_request_email_bounce event on your app or account to detect bounced emails, and respond with this method.
Updating the email address of a signer will generate a new signature_id value.
NOTE: This action cannot be performed on a signature request with an appended signature page.
Basic authentication of the form Basic <base64(username:)>.
Bearer authentication of the form Bearer <token>, where token is your auth token.
The new email address for the recipient.
This will generate a new signature_id value.
NOTE: Optional if name is provided.
The new name for the recipient.
NOTE: Optional if email_address is provided.
The new time when the signature request will expire. Unsigned signatures will be moved to the expired status, and no longer signable. See Signature Request Expiration Date for details.