diff --git a/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/UpdateRequest.java b/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/UpdateRequest.java
new file mode 100644
index 0000000..e6b62d7
--- /dev/null
+++ b/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/UpdateRequest.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.store.primitives.impl;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.collect.ImmutableSet;
+import org.onosproject.cluster.NodeId;
+
+import java.util.Set;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Describes a request for update events in an EventuallyConsistentMap.
+ */
+final class UpdateRequest<K> {
+
+    private final NodeId sender;
+    private final Set<K> keys;
+
+    /**
+     * Creates a new update request.
+     *
+     * @param sender the sender's node ID
+     * @param keys keys requested
+     */
+    public UpdateRequest(NodeId sender, Set<K> keys) {
+        this.sender = checkNotNull(sender);
+        this.keys = ImmutableSet.copyOf(keys);
+    }
+
+    /**
+     * Returns the sender's node ID.
+     *
+     * @return the sender's node ID
+     */
+    public NodeId sender() {
+        return sender;
+    }
+
+    /**
+     * Returns the keys.
+     *
+     * @return the keys
+     */
+    public Set<K> keys() {
+        return keys;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .add("sender", sender)
+                .add("keys", keys())
+                .toString();
+    }
+
+    @SuppressWarnings("unused")
+    private UpdateRequest() {
+        this.sender = null;
+        this.keys = null;
+    }
+}