I am using Unity/C#. When I call RegisterPlayFabUser(), I would also like to set some custom UserData for things like FirstName, LastName, ReferralSource. I see that RegisterPlayFabUser() has an optional last parameter customData that is of type object. I am unsure what to pass into that parameter, or whether it is for what I want to do.
My current work around is to call UpdateUserData() after I get the success callback from registration, and pass in a Dictionary<string,string>. That works, but I would prefer to do it all in only one call. Can I pass that same Dictionary as the customData in the call to RegisterPlayFabUser?