get https://api.ottolearn.io/v1/rest/Mastery.ListUserTopics()
Returns a list of all assigned Topics for a specified User's Module. If a Module has no assigned Topics, an empty array is returned. Each Topic returned will contain the Topic Id, Module Id, identifier, the Id of the associated image, the rank for sorting the Topic itself and the sortChildrenBy value, used to determine the sorting order of Topic's Concepts. If a User ID is not provided then it will return the results for the authenticated User ID.