diff --git a/src/serialization/json_archive.h b/src/serialization/json_archive.h
index e5665122..09fea679 100644
--- a/src/serialization/json_archive.h
+++ b/src/serialization/json_archive.h
@@ -157,7 +157,7 @@ inline
 bool do_serialize(json_archive<true>& ar, std::string& v)
 {
     ar.begin_string();
-    ar.stream() << v;
+    ar.stream() << epee::string_tools::buff_to_hex_nodelimer(v);
     ar.end_string();
     return true;
 }
@@ -171,3 +171,4 @@ bool do_serialize(json_archive<true>& ar, bool& v)
     ar.stream() << "false";
   return true;
 }
+
diff --git a/src/serialization/serialization.h b/src/serialization/serialization.h
index 02eee4b1..a44ec405 100644
--- a/src/serialization/serialization.h
+++ b/src/serialization/serialization.h
@@ -60,8 +60,8 @@ inline bool do_serialize(Archive &ar, T &v)
   template<> struct has_free_serializer<T> { typedef boost::true_type type; }
 #define VARIANT_TAG(A, T, Tg) \
   template <bool W> struct variant_serialization_traits<A<W>, T> { static inline typename A<W>::variant_tag_type get_tag() { return Tg; } }
-#define BEGIN_SERIALIZE() \
-  template <bool W, template <bool> class Archive> bool do_serialize(Archive<W> &_ser_ar) {uint8_t s_current_version ATTRIBUTE_UNUSED = 0; uint8_t s_version ATTRIBUTE_UNUSED = 0;
+#define BEGIN_SERIALIZE() BEGIN_SERIALIZE_OBJECT()
+//  template <bool W, template <bool> class Archive> bool do_serialize(Archive<W> &_ser_ar) {uint8_t s_current_version ATTRIBUTE_UNUSED = 0; uint8_t s_version ATTRIBUTE_UNUSED = 0;
 #define BEGIN_SERIALIZE_OBJECT() \
   template <bool W, template <bool> class Archive> bool do_serialize(Archive<W> &_ser_ar) {_ser_ar.begin_object(); bool _ser_res = do_serialize_object(_ser_ar); _ser_ar.end_object(); return _ser_res; } \
   template <bool W, template <bool> class Archive> bool do_serialize_object(Archive<W> &_ser_ar){ uint8_t s_current_version ATTRIBUTE_UNUSED = 0; uint8_t s_version ATTRIBUTE_UNUSED = 0; 
@@ -83,6 +83,7 @@ do { \
   if (!_ser_res || !_ser_ar.stream().good()) return false; \
 } while (0);
 #define FIELDS(f) \
+  _ser_ar.tag("AGGREGATED"); \
   bool _ser_res = ::do_serialize(_ser_ar, f); \
 if (!_ser_res || !_ser_ar.stream().good()) return false;
 #define FIELD(f) \