# ApiPeriodV2010PeriodAccountPeriodCallPeriodUserDefinedMessageSubscription ## Properties Name | Type | Description | Notes ------------ | ------------- | ------------- | ------------- **account_sid** | Option<**String**> | Account SID. | [optional] **call_sid** | Option<**String**> | Call SID. | [optional] **sid** | Option<**String**> | User Defined Message Subscription SID. | [optional] **date_created** | Option<**String**> | The date this User Defined Message Subscription was created. | [optional] **uri** | Option<**String**> | The URI of the User Defined Message Subscription Resource, relative to `https://api.twilio.com`. | [optional] [[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)