{
   "fields" : [
      {
         "name" : "title",
         "type" : "string"
      },
      {
         "name" : "created_at",
         "type" : [
            "null",
            {
               "logicalType" : "timestamp-millis",
               "type" : "long"
            }
         ]
      }
   ],
   "name" : "Bar",
   "namespace" : "foo",
   "type" : "record"
}