This template sets up a CA hierarchy and permission. It creates a root CA using the AWS::ACMPCA::CertificateAuthority resource, issues a CA certificate using the AWS::ACMPCA::Certificate resource, activates the root CA using the AWS::ACMPCA::CertificateAuthorityActivation resource, and sets permissions using the AWS::ACMPCA::Permission resource. It also creates a subordinate CA, issues a CA certificate for the subordinate CA, activates the subordinate CA, and sets permissions for the subordinate CA.