add field preferences param

app/controllers/api/submitters_controller.rb

@@ -85,7 +85,7 @@ module Api
         { metadata: {}, values: {}, readonly_fields: [], message: %i[subject body],
           fields: [[:name, :uuid, :default_value, :value,
                     :readonly, :redacted, :validation_pattern, :invalid_message,
-                    { default_value: [], value: [] }]] }
+                    { default_value: [], value: [], preferences: {} }]] }
       )
     end