List all subscriptions the user has to all mailing lists.
If successful, this endpoint will return a 200 OK status.
One of the following scopes are required to use this endpoint.
When the request is successful, you can expect an object matching the specification below to be returned.
{ mailing_list_subscriptions: [ MailingListSubscription { mailing_list: MailingList { name: String description: String permalink: String } active: Boolean merge_fields: [ KeyValue { key: String value: String? } ] } ] }