diff --git a/AsbCloudApp/Data/GTR/JsonValue.cs b/AsbCloudApp/Data/GTR/JsonValue.cs
new file mode 100644
index 00000000..cd37abea
--- /dev/null
+++ b/AsbCloudApp/Data/GTR/JsonValue.cs
@@ -0,0 +1,14 @@
+namespace AsbCloudApp.Data.GTR
+{
+    /// <summary>
+    /// Класс позволяющий хранить значение неопределенного типа.
+    /// Все возможные типы должны быть описаны в JsonValueJsonConverter.
+    /// </summary>
+    /// <param name="Value"></param>
+    public record JsonValue(object Value)
+    {
+        /// <inheritdoc/>
+        public override string ToString()
+            => Value.ToString() ?? string.Empty;
+    }
+}
diff --git a/AsbCloudApp/Data/GTR/WitsFloatDto.cs b/AsbCloudApp/Data/GTR/WitsFloatDto.cs
deleted file mode 100644
index 4867a566..00000000
--- a/AsbCloudApp/Data/GTR/WitsFloatDto.cs
+++ /dev/null
@@ -1,25 +0,0 @@
-using System;
-
-namespace AsbCloudApp.Data.GTR
-{
-    /// <summary>
-    /// класс для получения данных ГТИ с значением типа float
-    /// </summary>
-    public class WitsFloatDto : ITelemetryData
-    {
-        /// <inheritdoc/>
-        public DateTime DateTime { get; set; }
-        /// <inheritdoc/>
-        public int IdTelemetry { get; set; }
-        /// <summary>
-        /// ИД рекорда согласно спецификации WITS
-        /// </summary>
-        public int IdRecord { get; set; }
-        /// <summary>
-        /// ИД элемента рекорда согласно спецификации WITS
-        /// </summary>
-        public int IdItem { get; set; }
-        /// <inheritdoc/>
-        public float? Value { get; set; }
-    }
-}
diff --git a/AsbCloudApp/Data/GTR/WitsIntDto.cs b/AsbCloudApp/Data/GTR/WitsIntDto.cs
deleted file mode 100644
index a8001172..00000000
--- a/AsbCloudApp/Data/GTR/WitsIntDto.cs
+++ /dev/null
@@ -1,25 +0,0 @@
-using System;
-
-namespace AsbCloudApp.Data.GTR
-{
-    /// <summary>
-    /// класс для получения данных ГТИ с значением типа int16 int32
-    /// </summary>
-    public class WitsIntDto
-    {
-        /// <inheritdoc/>
-        public DateTime DateTime { get; set; }
-        /// <inheritdoc/>
-        public int IdTelemetry { get; set; }
-        /// <summary>
-        /// ИД рекорда согласно спецификации WITS
-        /// </summary>
-        public int IdRecord { get; set; }
-        /// <summary>
-        /// ИД элемента рекорда согласно спецификации WITS
-        /// </summary>
-        public int IdItem { get; set; }
-        /// <inheritdoc/>
-        public int? Value { get; set; }
-    }
-}
diff --git a/AsbCloudApp/Data/GTR/WitsRecordDto.cs b/AsbCloudApp/Data/GTR/WitsRecordDto.cs
new file mode 100644
index 00000000..28e6ba81
--- /dev/null
+++ b/AsbCloudApp/Data/GTR/WitsRecordDto.cs
@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+
+namespace AsbCloudApp.Data.GTR
+{
+    /// <summary>
+    /// Запись WITS
+    /// </summary>
+    public class WitsRecordDto
+    {
+        /// <summary>
+        /// Id записи
+        /// </summary>
+        public int Id { get; set; }
+
+        /// <summary>
+        /// Дата создания записи
+        /// </summary>
+        public DateTime Date { get; set; }
+
+        /// <summary>
+        /// Параметры. Ключ - id_item. ValueContainer содержит значение.
+        /// </summary>
+        public Dictionary<int, JsonValue> Items { get; set; } = new();
+    }
+}
diff --git a/AsbCloudApp/Data/GTR/WitsStrDto.cs b/AsbCloudApp/Data/GTR/WitsStrDto.cs
deleted file mode 100644
index 69b41e9c..00000000
--- a/AsbCloudApp/Data/GTR/WitsStrDto.cs
+++ /dev/null
@@ -1,25 +0,0 @@
-using System;
-
-namespace AsbCloudApp.Data.GTR
-{
-    /// <summary>
-    /// класс для получения данных ГТИ с значением типа string
-    /// </summary>
-    public class WitsStrDto : WitsBaseDto
-    {
-        /// <inheritdoc/>
-        public DateTime DateTime { get; set; }
-        /// <inheritdoc/>
-        public int IdTelemetry { get; set; }
-        /// <summary>
-        /// ИД рекорда согласно спецификации WITS
-        /// </summary>
-        public int IdRecord { get; set; }
-        /// <summary>
-        /// ИД элемента рекорда согласно спецификации WITS
-        /// </summary>
-        public int IdItem { get; set; }
-        /// <inheritdoc/>
-        public string? Value { get; set; }
-     }
-}
diff --git a/AsbCloudWebApi/Converters/ValueContainerJsonConverter.cs b/AsbCloudWebApi/Converters/ValueContainerJsonConverter.cs
new file mode 100644
index 00000000..386f1234
--- /dev/null
+++ b/AsbCloudWebApi/Converters/ValueContainerJsonConverter.cs
@@ -0,0 +1,74 @@
+using System;
+using System.Globalization;
+using System.Text.Json.Serialization;
+using System.Text.Json;
+using AsbCloudApp.Data.GTR;
+
+namespace AsbCloudWebApi.Converters
+{
+    public class JsonValueJsonConverter : JsonConverter<JsonValue>
+    {
+        public override JsonValue Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            if (reader.TokenType == JsonTokenType.String)
+            {
+                var stringVal = reader.GetString() ?? string.Empty;
+                return new JsonValue(stringVal);
+            }
+
+            if (reader.TokenType == JsonTokenType.Number)
+            {
+                if (reader.TryGetInt32(out int intVal))
+                    return new JsonValue(intVal);
+
+                if (reader.TryGetDouble(out double doubleVal))
+                    return new JsonValue((float)doubleVal);
+            }
+
+            throw new FormatException($"Wrong format at position {reader.Position}");
+        }
+
+        public override void Write(Utf8JsonWriter writer, JsonValue value, JsonSerializerOptions options)
+        {
+            if (value.Value is string strValue)
+            {
+                writer.WriteStringValue(FormatString(strValue));
+                return;
+            }
+
+            if (value.Value is int intValue)
+            {
+                writer.WriteNumberValue(intValue);
+                return;
+            }
+
+            if (value.Value is short shortValue)
+            {
+                writer.WriteNumberValue(shortValue);
+                return;
+            }
+
+            if (value.Value is float floatValue)
+            {
+                writer.WriteRawValue(floatValue.ToString("#0.0##", CultureInfo.InvariantCulture), true);
+                return;
+            }
+
+            if (value.Value is double doubleValue)
+            {
+                writer.WriteRawValue(doubleValue.ToString("#0.0##", CultureInfo.InvariantCulture), true);
+                return;
+            }
+
+            var typeName = value.Value.GetType().Name;
+            throw new NotImplementedException($"{typeName} is not supported type for WITS value");
+        }
+
+        private static string FormatString(string value)
+        => value
+            .Replace("\"", "")
+            .Trim()
+            .Replace("\r", "")
+            .Replace("\n", "");
+    }
+}
diff --git a/AsbCloudWebApi/Startup.cs b/AsbCloudWebApi/Startup.cs
index 14d8db0f..7399a68e 100644
--- a/AsbCloudWebApi/Startup.cs
+++ b/AsbCloudWebApi/Startup.cs
@@ -22,13 +22,14 @@ namespace AsbCloudWebApi
         public void ConfigureServices(IServiceCollection services)
         {
             services.AddControllers()
-                .AddJsonOptions(new System.Action<Microsoft.AspNetCore.Mvc.JsonOptions>(options =>
+                .AddJsonOptions(new System.Action<JsonOptions>(options =>
                 {
                     options.JsonSerializerOptions.NumberHandling =
                         System.Text.Json.Serialization.JsonNumberHandling.AllowNamedFloatingPointLiterals |
                         System.Text.Json.Serialization.JsonNumberHandling.AllowReadingFromString;
 
                     options.JsonSerializerOptions.Converters.Add(new DateOnlyJsonConverter());
+                    options.JsonSerializerOptions.Converters.Add(new JsonValueJsonConverter());
                 }))
                 .AddProtoBufNet();