dkimSigningAttributes
construct an aws.sdk.kotlin.services.sesv2.model.DkimSigningAttributes inside the given block
If your request includes this object, Amazon SES configures the identity to use Bring Your Own DKIM (BYODKIM) for DKIM authentication purposes, or, configures the key length to be used for Easy DKIM.
You can only specify this object if the email identity is a domain, as opposed to an address.