# TlsSubscriptionDataAttributes ## Properties Name | Type | Description | Notes ------------ | ------------- | ------------- | ------------- **certificate_authority** | Option<**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. | [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)