# Fastly::TlsSubscriptionDataAttributes ## Properties | Name | Type | Description | Notes | | ---- | ---- | ----------- | ----- | | **certificate_authority** | **String** | The entity that issues and certifies the TLS certificates for your subscription, either `certainly`, `lets-encrypt`, or `globalsign`. To migrate the subscription from one certificate authority to another, such as to migrate from 'lets-encrypt' to 'certainly', pass `certificate_authority` to the PATCH endpoint. To migrate from 'globalsign' to 'certainly', contact Fastly Support. | [optional] | [[Back to API list]](../../README.md#endpoints) [[Back to README]](../../README.md)