diff --git a/nostr-java-api/src/main/java/nostr/api/NostrSpringWebSocketClient.java b/nostr-java-api/src/main/java/nostr/api/NostrSpringWebSocketClient.java
index f38e0c34f..a787fddb7 100644
--- a/nostr-java-api/src/main/java/nostr/api/NostrSpringWebSocketClient.java
+++ b/nostr-java-api/src/main/java/nostr/api/NostrSpringWebSocketClient.java
@@ -111,14 +111,15 @@ public List<String> sendRequest(@NonNull List<Filters> filtersList, @NonNull Str
   public List<String> sendRequest(@NonNull Filters filters, @NonNull String subscriptionId) {
     createRequestClient(subscriptionId);
 
-    return clientMap.entrySet().stream().filter(entry ->
-            entry.getValue().getRelayName().equals(String.join(entry.getKey(), subscriptionId)))
+    return clientMap.entrySet().stream()
+        .filter(entry -> entry.getKey().endsWith(":" + subscriptionId))
         .map(Entry::getValue)
         .map(webSocketClientHandler ->
             webSocketClientHandler.sendRequest(
                 filters,
                 webSocketClientHandler.getRelayName()))
-        .flatMap(List::stream).toList();
+        .flatMap(List::stream)
+        .toList();
   }
 
 
@@ -157,17 +158,17 @@ public void close() throws IOException {
     }
   }
 
+  protected WebSocketClientHandler newWebSocketClientHandler(String relayName, String relayUri) {
+    return new WebSocketClientHandler(relayName, relayUri);
+  }
+
   private void createRequestClient(String subscriptionId) {
-    if (clientMap.entrySet().stream() // if a request client doesn't yet exist for subscriptionId...
-        .noneMatch(entry ->
-            entry.getValue().getRelayName().equals(String.join(entry.getKey(), subscriptionId)))) {
-      clientMap.keySet().forEach(clientMapKey -> // ... create one for each relay and add it to the client map
-          clientMap.entrySet().stream().map(entry ->
-                  new WebSocketClientHandler(
-                      String.join(entry.getKey(), subscriptionId),
-                      entry.getValue().getRelayUri()))
-              .toList().forEach(webSocketClientHandler ->
-                  clientMap.put(clientMapKey, webSocketClientHandler)));
-    }
+    clientMap.entrySet().stream()
+        .filter(entry -> !entry.getKey().contains(":"))
+        .forEach(entry -> {
+          String requestKey = entry.getKey() + ":" + subscriptionId;
+          clientMap.computeIfAbsent(requestKey,
+              key -> newWebSocketClientHandler(requestKey, entry.getValue().getRelayUri()));
+        });
   }
 }
diff --git a/nostr-java-api/src/test/java/nostr/api/unit/NostrSpringWebSocketClientTest.java b/nostr-java-api/src/test/java/nostr/api/unit/NostrSpringWebSocketClientTest.java
index a590c2192..a63bb788c 100644
--- a/nostr-java-api/src/test/java/nostr/api/unit/NostrSpringWebSocketClientTest.java
+++ b/nostr-java-api/src/test/java/nostr/api/unit/NostrSpringWebSocketClientTest.java
@@ -1,36 +1,83 @@
 package nostr.api.unit;
 
-import nostr.api.NostrIF;
 import nostr.api.NostrSpringWebSocketClient;
-import nostr.id.Identity;
-import org.junit.jupiter.api.BeforeEach;
+import nostr.api.WebSocketClientHandler;
 import org.junit.jupiter.api.Test;
 
 import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
-import static org.junit.jupiter.api.Assertions.assertSame;
+import sun.misc.Unsafe;
+
+import static org.junit.jupiter.api.Assertions.*;
 
 public class NostrSpringWebSocketClientTest {
 
-    @BeforeEach
-    void resetSingleton() throws Exception {
-        Field instance = NostrSpringWebSocketClient.class.getDeclaredField("INSTANCE");
-        instance.setAccessible(true);
-        instance.set(null, null);
+    private static class TestClient extends NostrSpringWebSocketClient {
+        @Override
+        protected WebSocketClientHandler newWebSocketClientHandler(String relayName, String relayUri) {
+            try {
+                return createHandler(relayName, relayUri);
+            } catch (Exception e) {
+                throw new RuntimeException(e);
+            }
+        }
     }
 
-    @Test
-    void getInstanceShouldReturnSameInstance() {
-        NostrIF first = NostrSpringWebSocketClient.getInstance();
-        NostrIF second = NostrSpringWebSocketClient.getInstance();
-        assertSame(first, second, "Multiple calls should return the same instance");
+    private static WebSocketClientHandler createHandler(String name, String uri) throws Exception {
+        Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe");
+        theUnsafe.setAccessible(true);
+        Unsafe unsafe = (Unsafe) theUnsafe.get(null);
+        WebSocketClientHandler handler = (WebSocketClientHandler) unsafe.allocateInstance(WebSocketClientHandler.class);
+
+        Field relayName = WebSocketClientHandler.class.getDeclaredField("relayName");
+        relayName.setAccessible(true);
+        relayName.set(handler, name);
+
+        Field relayUri = WebSocketClientHandler.class.getDeclaredField("relayUri");
+        relayUri.setAccessible(true);
+        relayUri.set(handler, uri);
+
+        Field eventClient = WebSocketClientHandler.class.getDeclaredField("eventClient");
+        eventClient.setAccessible(true);
+        eventClient.set(handler, null);
+
+        Field requestClientMap = WebSocketClientHandler.class.getDeclaredField("requestClientMap");
+        requestClientMap.setAccessible(true);
+        requestClientMap.set(handler, new ConcurrentHashMap<>());
+
+        return handler;
     }
 
     @Test
-    void getInstanceWithIdentityShouldReturnSameInstance() {
-        Identity identity = Identity.generateRandomIdentity();
-        NostrIF first = NostrSpringWebSocketClient.getInstance(identity);
-        NostrIF second = NostrSpringWebSocketClient.getInstance();
-        assertSame(first, second, "Calls with and without identity should return the same instance");
+    void testMultipleSubscriptionsDoNotOverwriteHandlers() throws Exception {
+        NostrSpringWebSocketClient client = new TestClient();
+
+        Field field = NostrSpringWebSocketClient.class.getDeclaredField("clientMap");
+        field.setAccessible(true);
+        @SuppressWarnings("unchecked")
+        Map<String, WebSocketClientHandler> map = (Map<String, WebSocketClientHandler>) field.get(client);
+
+        map.put("relayA", createHandler("relayA", "ws://a"));
+        map.put("relayB", createHandler("relayB", "ws://b"));
+
+        Method method = NostrSpringWebSocketClient.class.getDeclaredMethod("createRequestClient", String.class);
+        method.setAccessible(true);
+
+        method.invoke(client, "sub1");
+        assertEquals(4, map.size());
+        WebSocketClientHandler handlerA1 = map.get("relayA:sub1");
+        WebSocketClientHandler handlerB1 = map.get("relayB:sub1");
+        assertNotNull(handlerA1);
+        assertNotNull(handlerB1);
+
+        method.invoke(client, "sub2");
+        assertEquals(6, map.size());
+        assertSame(handlerA1, map.get("relayA:sub1"));
+        assertSame(handlerB1, map.get("relayB:sub1"));
+        assertNotNull(map.get("relayA:sub2"));
+        assertNotNull(map.get("relayB:sub2"));
     }
 }