record

gistfile1.txt

{message,
  [{1, message_type, string, required, {json, validate_binary}, "", []},
  {2, version, 'version', required, {json, validate_integer_in_list}, {proper, {required_integer_in_list}}, {int64, [1], 1}},
  {3, payload, 'payload', required, {ubic_validate, validate}, "", []},
 ]}