The number of members in the organization.This includes disabled users, but does not include user's marked for deletion.
The email address of the invitee.This is required if a user isn't provided or the user's email address is empty.
The client defined unique identifier of the role.It is restricted to letters, numbers, underscores, and hyphens, with the first character a letter or a number, and a 255 character maximum.ID's starting with role_ are reserved.