app/models/file_depot/import_export.rb
module FileDepot::ImportExport
extend ActiveSupport::Concern
def export_to_array
export_attributes = attributes.except('id', 'created_at', 'updated_at')
export_attributes['AuthenticationsContent'] = authentications.map(&:export_to_array)
[self.class.to_s => export_attributes]
end
end