module ActiveModelSerializers::Adapter::JsonApi::Deserialization

def parse(document, options = {})

on invalid payloads.
Same as parse!, but returns an empty hash instead of raising InvalidDocument 
def parse(document, options = {})
  document = document.dup.permit!.to_h if document.is_a?(ActionController::Parameters)
  validate_payload(document) do |invalid_document, reason|
    yield invalid_document, reason if block_given?
    return {}
  end
  primary_data = document['data']
  attributes = primary_data['attributes'] || {}
  attributes['id'] = primary_data['id'] if primary_data['id']
  relationships = primary_data['relationships'] || {}
  filter_fields(attributes, options)
  filter_fields(relationships, options)
  hash = {}
  hash.merge!(parse_attributes(attributes, options))
  hash.merge!(parse_relationships(relationships, options))
  hash
end