--- a/sat/plugins/plugin_xep_0060.py	Fri May 13 18:22:06 2022 +0200
+++ b/sat/plugins/plugin_xep_0060.py	Fri May 13 18:29:42 2022 +0200
@@ -17,7 +17,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
-from typing import Optional, List, Tuple
+from typing import Optional, List, Tuple, Dict, Union
 from collections import namedtuple
 import urllib.request, urllib.parse, urllib.error
 from functools import reduce
@@ -255,7 +255,7 @@
         host.bridge.addMethod(
             "psSubscribe",
             ".plugin",
-            in_sign="ssa{ss}s",
+            in_sign="ssss",
             out_sign="s",
             method=self._subscribe,
             async_=True,
@@ -1147,7 +1147,12 @@
         client = self.host.getClient(profile_key)
         service = None if not service else jid.JID(service)
         d = defer.ensureDeferred(
-            self.subscribe(client, service, nodeIdentifier, options=options or None)
+            self.subscribe(
+                client,
+                service,
+                nodeIdentifier,
+                options=data_format.deserialise(options)
+            )
         )
         d.addCallback(lambda subscription: subscription.subscriptionIdentifier or "")
         return d
@@ -1161,14 +1166,15 @@
         options: Optional[dict] = None
     ) -> pubsub.Subscription:
         # TODO: reimplement a subscribtion cache, checking that we have not subscription before trying to subscribe
+        cont, trigger_sub = await self.host.trigger.asyncReturnPoint(
+            "XEP-0060_subscribe", client, service, nodeIdentifier, sub_jid, options,
+        )
+        if not cont:
+            return trigger_sub
         subscription = await client.pubsub_client.subscribe(
             service, nodeIdentifier, sub_jid or client.jid.userhostJID(), options=options,
             sender=client.jid.userhostJID()
         )
-        await self.host.trigger.asyncPoint(
-            "XEP-0060_subscribe", client, service, nodeIdentifier, sub_jid, options,
-            subscription
-        )
         return subscription
 
     def _unsubscribe(self, service, nodeIdentifier, profile_key=C.PROF_KEY_NONE):
@@ -1181,10 +1187,15 @@
         client: SatXMPPEntity,
         service: jid.JID,
         nodeIdentifier: str,
-        sub_jid=None,
-        subscriptionIdentifier=None,
-        sender=None,
-    ):
+        sub_jid: Optional[jid.JID] = None,
+        subscriptionIdentifier: Optional[str] = None,
+        sender: Optional[jid.JID] = None,
+    ) -> None:
+        if not await self.host.trigger.asyncPoint(
+            "XEP-0060_unsubscribe", client, service, nodeIdentifier, sub_jid,
+            subscriptionIdentifier, sender
+        ):
+            return
         await client.pubsub_client.unsubscribe(
             service,
             nodeIdentifier,
@@ -1192,10 +1203,6 @@
             subscriptionIdentifier,
             sender,
         )
-        await self.host.trigger.asyncPoint(
-            "XEP-0060_unsubscribe", client, service, nodeIdentifier, sub_jid,
-            subscriptionIdentifier, sender
-        )
 
     def _subscriptions(self, service, nodeIdentifier="", profile_key=C.PROF_KEY_NONE):
         client = self.host.getClient(profile_key)