Added properties RelatedUser and AdditionalInfo to InstanceEvent (#537)

Co-authored-by: Henning Normann <[email protected]>

src/Storage.Interface/Models/InstanceEvent.cs

@@ -53,6 +53,12 @@ public class InstanceEvent
         [JsonProperty(PropertyName = "user")]
         public PlatformUser User { get; set; }
 
+        /// <summary>
+        /// A user that is related to the event
+        /// </summary>
+        [JsonProperty(PropertyName = "relatedUser")]
+        public PlatformUser RelatedUser { get; set; }
+
         /// <summary>
         /// More information about the process event.
         /// Contains a snapshot of the changed currentTask element of the instance.
@@ -61,6 +67,12 @@ public class InstanceEvent
         [JsonProperty(PropertyName = "processInfo")]
         public ProcessState ProcessInfo { get; set; }
 
+        /// <summary>
+        /// Additional information describing the event
+        /// </summary>
+        [JsonProperty(PropertyName = "additionalInfo")]
+        public string AdditionalInfo { get; set; }
+
         /// <inheritdoc/>
         public override string ToString()
         {