#414 Update README

api/README.md

@@ -10,7 +10,6 @@ classes that provide the basic functionality to build an sdk-client.
 ```mermaid
 classDiagram
 
-
   class CryptoService{
     + decryptString
     + decryptBytes 
@@ -53,13 +52,17 @@ classDiagram
     + validateMetadataHashValues
   }
 
-
-
-  class Client{
+  class SenderClient{
     ClientFactory
   }
+  
+   class SubscriberClient{
+    ClientFactory
+  }
+
 
-FitCoClient  ..> ClientFactory : Uses
+SenderClient  ..> ClientFactory : Uses
+SubscriberClient  ..> ClientFactory : Uses
 ClientFactory  ..> Sender : Creates
 ClientFactory  ..> Subscriber : Creates
 
@@ -74,5 +77,4 @@ Subscriber ..> OAuthService : Uses
 Subscriber ..> CryptoService : Uses
 Subscriber ..> MetadataValidator : Uses
 
-
 ```