adjust create submission resp

lib/templates/serialize_for_api.rb

@@ -2,13 +2,15 @@
 
 module Templates
   module SerializeForApi
+    SERIALIZE_PARAMS = {
+      methods: %i[application_key folder_name],
+      include: { author: { only: %i[id email first_name last_name] } }
+    }.freeze
+
     module_function
 
     def call(template, schema_documents = template.schema_documents, preview_image_attachments = [])
-      json = template.as_json(
-        methods: %i[application_key folder_name],
-        include: { author: { only: %i[id email first_name last_name] } }
-      )
+      json = template.as_json(SERIALIZE_PARAMS)
 
       json[:documents] = template.schema.map do |item|
         attachment = schema_documents.find { |e| e.uuid == item['attachment_uuid'] }