diff --git a/src/Zirconium/Core/SessionAuthData.cs b/src/Zirconium/Core/SessionAuthData.cs
index 35042d0..12d0b14 100644
--- a/src/Zirconium/Core/SessionAuthData.cs
+++ b/src/Zirconium/Core/SessionAuthData.cs
@@ -2,7 +2,7 @@ namespace Zirconium.Core
 {
     public class SessionAuthData
     {
-        public string EntityID { get; set; }
+        public string[] EntityID { get; set; }
         public string DeviceID { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/ZirconiumPlugins/DefaultAuthProvider/Plugin.cs b/src/ZirconiumPlugins/DefaultAuthProvider/Plugin.cs
index e70815d..aaa8fe2 100644
--- a/src/ZirconiumPlugins/DefaultAuthProvider/Plugin.cs
+++ b/src/ZirconiumPlugins/DefaultAuthProvider/Plugin.cs
@@ -103,7 +103,7 @@ namespace DefaultAuthProvider
         {
             SessionAuthData payload = new SessionAuthData();
             payload.DeviceID = deviceID;
-            payload.EntityID = entityID;
+            payload.EntityID = new string[] { entityID };
             return new JwtBuilder()
                 .WithAlgorithm(new HMACSHA256Algorithm()) // symmetric
                 .WithSecret(this.jwtSecret)