diff --git a/src/core/core_subscription.erl b/src/core/core_subscription.erl
index bae7bc8..345e180 100644
--- a/src/core/core_subscription.erl
+++ b/src/core/core_subscription.erl
@@ -193,23 +193,49 @@ apply_updates(Sub, Updates) ->
                       <<"expired">>   -> expired;
                       Other           -> Other
                     end,
-        Acc#subscription{status = NewStatus, updated_at = calendar:universal_time()};
+        Acc#subscription{status = NewStatus,
+          updated_at = calendar:universal_time()};
       <<"plan">> ->
         NewPlan = case Value of
-                    <<"monthly">>  -> monthly;
-                    <<"yearly">>   -> yearly;
-                    <<"quarterly">>-> quarterly;
-                    <<"biannual">> -> biannual;
-                    <<"annual">>   -> annual;
-                    Other          -> Other
+                    <<"monthly">>   -> monthly;
+                    <<"yearly">>    -> yearly;
+                    <<"quarterly">> -> quarterly;
+                    <<"biannual">>  -> biannual;
+                    <<"annual">>    -> annual;
+                    Other           -> Other
                   end,
-        Acc#subscription{plan = NewPlan, updated_at = calendar:universal_time()};
+        Acc#subscription{plan = NewPlan,
+          updated_at = calendar:universal_time()};
       <<"trial_used">> ->
-        Acc#subscription{trial_used = Value, updated_at = calendar:universal_time()};
+        Acc#subscription{trial_used = Value,
+          updated_at = calendar:universal_time()};
       <<"expires_at">> ->
-        Acc#subscription{expires_at = Value, updated_at = calendar:universal_time()};
-      _ -> Acc
+        Acc#subscription{expires_at = parse_iso_datetime(Value),
+          updated_at = calendar:universal_time()};
+      <<"started_at">> ->
+        Acc#subscription{started_at = parse_iso_datetime(Value),
+          updated_at = calendar:universal_time()};
+      _ ->
+        Acc
     end
-              end, Sub, maps:to_list(Updates)).
+  end, Sub, maps:to_list(Updates)).
+
+parse_iso_datetime(Bin) when is_binary(Bin) ->
+  try
+    [DateStr, TimeStr] = string:split(Bin, "T"),
+    TimeStrNoZ = string:trim(TimeStr, trailing, "Z"),
+    [YearStr, MonthStr, DayStr] = string:split(DateStr, "-", all),
+    [HourStr, MinuteStr, SecondStr] = string:split(TimeStrNoZ, ":", all),
+    Year   = binary_to_integer(list_to_binary(YearStr)),
+    Month  = binary_to_integer(list_to_binary(MonthStr)),
+    Day    = binary_to_integer(list_to_binary(DayStr)),
+    Hour   = binary_to_integer(list_to_binary(HourStr)),
+    Minute = binary_to_integer(list_to_binary(MinuteStr)),
+    Second = binary_to_integer(list_to_binary(SecondStr)),
+    {{Year, Month, Day}, {Hour, Minute, Second}}
+  catch
+    _:_ -> Bin   % если не получилось разобрать, оставляем как есть
+  end;
+parse_iso_datetime(Other) -> Other.
 
 count_subscription() -> mnesia:table_info(subscription, size).
\ No newline at end of file
diff --git a/src/handlers/handler_utils.erl b/src/handlers/handler_utils.erl
index 5d3efc1..b760ff6 100644
--- a/src/handlers/handler_utils.erl
+++ b/src/handlers/handler_utils.erl
@@ -319,8 +319,13 @@ subscription_to_json(Subscription) ->
 %%%===================================================================
 
 %% @private
--spec datetime_to_iso8601(calendar:datetime() | undefined) -> binary() | undefined.
+-spec datetime_to_iso8601(calendar:datetime() | binary() | undefined) -> binary() | undefined.
 datetime_to_iso8601(undefined) -> undefined;
+datetime_to_iso8601(Bin) when is_binary(Bin) ->
+  case byte_size(Bin) > 0 of
+    true -> Bin;
+    false -> undefined
+  end;
 datetime_to_iso8601({{Year, Month, Day}, {Hour, Minute, Second}}) ->
   iolist_to_binary(
     io_lib:format("~4..0B-~2..0B-~2..0BT~2..0B:~2..0B:~2..0BZ",