Each Janrain entity type (user database) has a schema, a blueprint that details what can and cannot be stored in that database. Here's what's available in the Janrain Console, at least when it comes to schemas:
An overview of entity type schemas and how to manage them.
Accessing the Manage Schemas Page
Locating your schemas in the Janrain Console.
Viewing Schema Information
The schema information available to you, and what it
Exporting a Schema
Downloading a detailed copy
of a schema.