Sending data using zmq from python to Unity3d (C#) using PUB-SUB

I have a python program communicating with a C# program connected to a Unity3D environment. The part where the python program subscribes to the C# program is working. However, the Unity3D environment is not subscribing to the data that the python code is publishing to the defined zmq socket. I tried sending all kinds of data and also try to check what is coming in by printing it on the debug window. But C# is not being able to subscribe to it in any way. The C# code could subscribe to data published by a C++ code. Is it not possible to publish data from python to C#? Or is there a different technique to achieve the python to C# zmq communication?