diff --git a/backend/src/Squidex.Domain.Users/UserManagerExtensions.cs b/backend/src/Squidex.Domain.Users/UserManagerExtensions.cs
index 4e7aa3371..152af9e3e 100644
--- a/backend/src/Squidex.Domain.Users/UserManagerExtensions.cs
+++ b/backend/src/Squidex.Domain.Users/UserManagerExtensions.cs
@@ -117,11 +117,11 @@ internal static class UserManagerExtensions
 
         if (values.Properties != null)
         {
-            RemoveClaims(x => x.Type.StartsWith(SquidexClaimTypes.CustomPrefix, StringComparison.OrdinalIgnoreCase));
+            RemoveClaims(x => x.Type.StartsWith(SquidexClaimTypes.Custom, StringComparison.OrdinalIgnoreCase));
 
             foreach (var (name, value) in values.Properties)
             {
-                AddClaim($"{SquidexClaimTypes.CustomPrefix}:{name}", value);
+                AddClaim(SquidexClaimTypes.Custom, $"{name}={value}");
             }
         }
 
diff --git a/backend/src/Squidex.Shared/Identity/SquidexClaimTypes.cs b/backend/src/Squidex.Shared/Identity/SquidexClaimTypes.cs
index e37b9ab61..878a23768 100644
--- a/backend/src/Squidex.Shared/Identity/SquidexClaimTypes.cs
+++ b/backend/src/Squidex.Shared/Identity/SquidexClaimTypes.cs
@@ -15,7 +15,7 @@ namespace Squidex.Shared.Identity
 
         public const string ConsentForEmails = "urn:squidex:consent:emails";
 
-        public const string CustomPrefix = "urn:squidex:custom";
+        public const string Custom = "urn:squidex:custom";
 
         public const string DisplayName = "urn:squidex:name";
 
@@ -33,6 +33,6 @@ namespace Squidex.Shared.Identity
 
         public const string TotalApps = "urn:squidex:internal:totalApps";
 
-        public const string UIPrefix = "urn:squidex:custom";
+        public const string UIProperty = "urn:squidex:ui";
     }
 }
diff --git a/backend/src/Squidex.Shared/Identity/SquidexClaimsExtensions.cs b/backend/src/Squidex.Shared/Identity/SquidexClaimsExtensions.cs
index 5788ce040..1b7ba22bb 100644
--- a/backend/src/Squidex.Shared/Identity/SquidexClaimsExtensions.cs
+++ b/backend/src/Squidex.Shared/Identity/SquidexClaimsExtensions.cs
@@ -10,6 +10,7 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
 using System.Security.Claims;
+using System.Text.RegularExpressions;
 using Squidex.Infrastructure.Security;
 
 namespace Squidex.Shared.Identity
@@ -18,6 +19,9 @@ namespace Squidex.Shared.Identity
     {
         private const string ClientPrefix = "client_";
 
+        private static readonly Regex KeyValueAppClaim = new Regex("(?<App>[\\S]+),(?<Key>[^=]+)=(?<Value>.+)", RegexOptions.Compiled);
+        private static readonly Regex KeyValueClaim = new Regex("(?<Key>[^=]+)=(?<Value>.+)", RegexOptions.Compiled);
+
         public static PermissionSet Permissions(this IEnumerable<Claim> user)
         {
             var permissions = user.GetClaims(SquidexClaimTypes.Permissions).Select(x => x.Value);
@@ -106,7 +110,7 @@ namespace Squidex.Shared.Identity
 
         public static IEnumerable<(string Name, string Value)> GetCustomProperties(this IEnumerable<Claim> user)
         {
-            var prefix = SquidexClaimTypes.CustomPrefix;
+            var prefix = $"{SquidexClaimTypes.Custom}:";
 
             foreach (var claim in user)
             {
@@ -114,16 +118,25 @@ namespace Squidex.Shared.Identity
 
                 if (type.StartsWith(prefix, StringComparison.OrdinalIgnoreCase))
                 {
-                    var name = type[(prefix.Length + 1)..].ToString();
+                    var name = type[prefix.Length..].ToString();
+
+                    yield return (name.Trim(), claim.Value.Trim());
+                }
+                else if (type.Equals(SquidexClaimTypes.Custom, StringComparison.OrdinalIgnoreCase))
+                {
+                    var match = KeyValueClaim.Match(claim.Value);
 
-                    yield return (name, claim.Value);
+                    if (match.Success)
+                    {
+                        yield return (match.Groups["Key"].Value.Trim(), match.Groups["Value"].Value.Trim());
+                    }
                 }
             }
         }
 
         public static IEnumerable<(string Name, string Value)> GetUIProperties(this IEnumerable<Claim> user, string app)
         {
-            var prefix = $"{SquidexClaimTypes.UIPrefix}:{app}";
+            var prefix = $"{SquidexClaimTypes.UIProperty}:{app}:";
 
             foreach (var claim in user)
             {
@@ -131,9 +144,23 @@ namespace Squidex.Shared.Identity
 
                 if (type.StartsWith(prefix, StringComparison.OrdinalIgnoreCase))
                 {
-                    var name = type[(prefix.Length + 1)..].ToString();
+                    var name = type[prefix.Length..].ToString();
+
+                    yield return (name.Trim(), claim.Value.Trim());
+                }
+                else if (type.Equals(SquidexClaimTypes.UIProperty, StringComparison.OrdinalIgnoreCase))
+                {
+                    if (!claim.Value.StartsWith(app, StringComparison.OrdinalIgnoreCase))
+                    {
+                        continue;
+                    }
+
+                    var match = KeyValueAppClaim.Match(claim.Value);
 
-                    yield return (name, claim.Value);
+                    if (match.Success)
+                    {
+                        yield return (match.Groups["Key"].Value.Trim(), match.Groups["Value"].Value.Trim());
+                    }
                 }
             }
         }
diff --git a/backend/tests/Squidex.Domain.Users.Tests/SquidexClaimExtensionsTests.cs b/backend/tests/Squidex.Domain.Users.Tests/SquidexClaimExtensionsTests.cs
new file mode 100644
index 000000000..b849ac04e
--- /dev/null
+++ b/backend/tests/Squidex.Domain.Users.Tests/SquidexClaimExtensionsTests.cs
@@ -0,0 +1,90 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System.Security.Claims;
+using Squidex.Shared.Identity;
+
+namespace Squidex.Domain.Users;
+
+public class SquidexClaimExtensionsTests
+{
+    [Fact]
+    public void Should_extract_custom_claims_v1()
+    {
+        var source = new[]
+        {
+            new Claim($"{SquidexClaimTypes.Custom}:key1", "value1"),
+            new Claim($"{SquidexClaimTypes.Custom}:key2", "value2 "),
+        };
+
+        var result = source.GetCustomProperties();
+
+        Assert.Equal(new[]
+        {
+            ("key1", "value1"),
+            ("key2", "value2")
+        }, result.ToArray());
+    }
+
+    [Fact]
+    public void Should_extract_custom_claims_v2()
+    {
+        var source = new[]
+        {
+            new Claim(SquidexClaimTypes.Custom, "key1=value1"),
+            new Claim(SquidexClaimTypes.Custom, "key2=value2 "),
+            new Claim(SquidexClaimTypes.Custom, "value "),
+        };
+
+        var result = source.GetCustomProperties();
+
+        Assert.Equal(new[]
+        {
+            ("key1", "value1"),
+            ("key2", "value2")
+        }, result.ToArray());
+    }
+
+    [Fact]
+    public void Should_extract_ui_claims_v1()
+    {
+        var source = new[]
+        {
+            new Claim($"{SquidexClaimTypes.UIProperty}:app1:key1", "value1"),
+            new Claim($"{SquidexClaimTypes.UIProperty}:app1:key2", "value2 "),
+            new Claim($"{SquidexClaimTypes.UIProperty}:app2:key3", "value3"),
+        };
+
+        var result = source.GetUIProperties("app1");
+
+        Assert.Equal(new[]
+        {
+            ("key1", "value1"),
+            ("key2", "value2")
+        }, result.ToArray());
+    }
+
+    [Fact]
+    public void Should_extract_ui_claims_v2()
+    {
+        var source = new[]
+        {
+            new Claim($"{SquidexClaimTypes.UIProperty}", "app1,value"),
+            new Claim($"{SquidexClaimTypes.UIProperty}", "app1,key1=value1"),
+            new Claim($"{SquidexClaimTypes.UIProperty}", "app1,key2=value2 "),
+            new Claim($"{SquidexClaimTypes.UIProperty}", "app2,key3=value3"),
+        };
+
+        var result = source.GetUIProperties("app1");
+
+        Assert.Equal(new[]
+        {
+            ("key1", "value1"),
+            ("key2", "value2")
+        }, result.ToArray());
+    }
+}