diff --git a/util/Seeder/Factories/UserSeeder.cs b/util/Seeder/Factories/UserSeeder.cs
index 90cadf0b78..55355fe515 100644
--- a/util/Seeder/Factories/UserSeeder.cs
+++ b/util/Seeder/Factories/UserSeeder.cs
@@ -1,11 +1,50 @@
 using Bit.Core.Enums;
+using Bit.Core.Utilities;
 using Bit.Infrastructure.EntityFramework.Models;
 
 namespace Bit.Seeder.Factories;
 
-public class UserSeeder
+public struct UserData
 {
-    public static User CreateUser(string email)
+    public string Email;
+    public Guid Id;
+    public string? Key;
+    public string? PublicKey;
+    public string? PrivateKey;
+    public string? ApiKey;
+    public KdfType Kdf;
+    public int KdfIterations;
+}
+
+#pragma warning disable CS9113 // Parameter is unread.
+public class UserSeeder(Guid mangleId)
+#pragma warning restore CS9113 // Parameter is unread.
+{
+    private string MangleEmail(string email)
+    {
+        return "admin@large.test"; // only this email works, for now
+        // return $"{mangleId}+{email}";
+    }
+
+    public User CreateUser(string email)
+    {
+        return new User
+        {
+            Id = CoreHelpers.GenerateComb(),
+            Email = MangleEmail(email),
+            MasterPassword = "AQAAAAIAAYagAAAAEBATmF66OHMpHuHKc1CsGZQ1ltHUHyhYK+7e4re3bVFi16SOpLpDfzdFswnvFQs2Rg==",
+            SecurityStamp = "4830e359-e150-4eae-be2a-996c81c5e609",
+            Key = "2.z/eLKFhd62qy9RzXu3UHgA==|fF6yNupiCIguFKSDTB3DoqcGR0Xu4j+9VlnMyT5F3PaWIcGhzQKIzxdB95nhslaCQv3c63M7LBnvzVo1J9SUN85RMbP/57bP1HvhhU1nvL8=|IQPtf8v7k83MFZEhazSYXSdu98BBU5rqtvC4keVWyHM=",
+            PublicKey = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0Ww2chogqCpaAR7Uw448am4b7vDFXiM5kXjFlGfXBlrAdAqTTggEvTDlMNYqPlCo+mBM6iFmTTUY9rpZBvFskMnKvsvpJ47/fehAH2o2e3Ulv/5NFevaVCMCmpkBDtbMbO1A4a3btdRtCP8DsKWMefHauEpaoLxNTLWnOIZVfCMjsSgx2EvULHAZPTtbFwm4+UVKniM4ds4jvOsD85h4jn2aLs/jWJXFfxN8iVSqEqpC2TBvsPdyHb49xQoWWfF0Z6BiNqeNGKEU9Uos1pjL+kzhEzzSpH31PZT/ufJ/oo4+93wrUt57hb6f0jxiXhwd5yQ+9F6wVwpbfkq0IwhjOwIDAQAB",
+            PrivateKey = "2.yN7l00BOlUE0Sb0M//Q53w==|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|09J28iXv9oWzYtzK2LBT6Yht4IT4MijEkk0fwFdrVQ4=",
+            ApiKey = "7gp59kKHt9kMlks0BuNC4IjNXYkljR",
+
+            Kdf = KdfType.PBKDF2_SHA256,
+            KdfIterations = 600_000,
+        };
+    }
+
+    public static User CreateUserNoMangle(string email)
     {
         return new User
         {
@@ -22,4 +61,32 @@ public class UserSeeder
             KdfIterations = 600_000,
         };
     }
+
+    public Dictionary<string, string?> GetMangleMap(User user, UserData expectedUserData)
+    {
+        var mangleMap = new Dictionary<string, string?>
+        {
+            {expectedUserData.Email, MangleEmail(expectedUserData.Email) },
+            {expectedUserData.Id.ToString(), user.Id.ToString() },
+            {expectedUserData.Kdf.ToString(), user.Kdf.ToString() },
+            {expectedUserData.KdfIterations.ToString(), user.KdfIterations.ToString() }
+        };
+        if (expectedUserData.Key != null)
+        {
+            mangleMap[expectedUserData.Key] = user.Key;
+        }
+        if (expectedUserData.PublicKey != null)
+        {
+            mangleMap[expectedUserData.PublicKey] = user.PublicKey;
+        }
+        if (expectedUserData.PrivateKey != null)
+        {
+            mangleMap[expectedUserData.PrivateKey] = user.PrivateKey;
+        }
+        if (expectedUserData.ApiKey != null)
+        {
+            mangleMap[expectedUserData.ApiKey] = user.ApiKey;
+        }
+        return mangleMap;
+    }
 }
diff --git a/util/Seeder/Recipes/OrganizationWithUsersRecipe.cs b/util/Seeder/Recipes/OrganizationWithUsersRecipe.cs
index 723e95a0ef..4512d32f7a 100644
--- a/util/Seeder/Recipes/OrganizationWithUsersRecipe.cs
+++ b/util/Seeder/Recipes/OrganizationWithUsersRecipe.cs
@@ -9,15 +9,16 @@ public class OrganizationWithUsersRecipe(DatabaseContext db)
 {
     public RecipeResult Seed(string name, int users, string domain)
     {
+        var mangleId = Guid.NewGuid();
         var organization = OrganizationSeeder.CreateEnterprise(name, domain, users);
-        var user = UserSeeder.CreateUser($"admin@{domain}");
+        var user = UserSeeder.CreateUserNoMangle($"admin@{domain}");
         var orgUser = organization.CreateOrganizationUser(user);
 
         var additionalUsers = new List<User>();
         var additionalOrgUsers = new List<OrganizationUser>();
         for (var i = 0; i < users; i++)
         {
-            var additionalUser = UserSeeder.CreateUser($"user{i}@{domain}");
+            var additionalUser = UserSeeder.CreateUserNoMangle($"user{i}@{domain}");
             additionalUsers.Add(additionalUser);
             additionalOrgUsers.Add(organization.CreateOrganizationUser(additionalUser));
         }
diff --git a/util/Seeder/Recipes/SingleUserRecipe.cs b/util/Seeder/Recipes/SingleUserRecipe.cs
new file mode 100644
index 0000000000..b62013db1d
--- /dev/null
+++ b/util/Seeder/Recipes/SingleUserRecipe.cs
@@ -0,0 +1,29 @@
+using Bit.Core.Enums;
+using Bit.Infrastructure.EntityFramework.Repositories;
+using Bit.Seeder.Factories;
+
+namespace Bit.Seeder.Recipes;
+
+public class SingleUserRecipe(DatabaseContext db)
+{
+    public Dictionary<string, string?> Seed(string email)
+    {
+        var userSeeder = new UserSeeder(Guid.NewGuid());
+        var user = userSeeder.CreateUser(email);
+
+        db.Add(user);
+        db.SaveChanges();
+
+        return userSeeder.GetMangleMap(user, new UserData
+        {
+            Email = email,
+            Id = Guid.Parse("00000000-0000-0000-0000-000000000001"),
+            Key = "seeded_key",
+            PublicKey = "seeded_public_key",
+            PrivateKey = "seeded_private_key",
+            ApiKey = "seeded_api_key",
+            Kdf = KdfType.PBKDF2_SHA256,
+            KdfIterations = 600_000,
+        });
+    }
+}