use dict as argument for rpc.send_msg

freqtrade/rpc/rpc_manager.py

@@ -2,7 +2,7 @@
 This module contains class to manage RPC communications (Telegram, Slack, ...)
 """
 import logging
-from typing import List
+from typing import List, Dict
 
 from freqtrade.rpc.rpc import RPC
 
@@ -32,11 +32,14 @@ class RPCManager(object):
             mod.cleanup()
             del mod
 
-    def send_msg(self, msg: str) -> None:
+    def send_msg(self, msg: Dict[str, str]) -> None:
         """
-        Send given markdown message to all registered rpc modules
-        :param msg: message
-        :return: None
+        Send given message to all registered rpc modules.
+        A message consists of one or more key value pairs of strings.
+        e.g.:
+        {
+            'status': 'stopping bot'
+        }
         """
         logger.info('Sending rpc message: %s', msg)
         for mod in self.registered_modules: