How can I use reflection to instance a class which takes ReadOnlySpan as a constructor argument?

I have code like this:

    // lookup the object type, instance passing the data as constructor
    //all registered types must implement ctor passed ReadOnlySpan<byte>
    public static object InterpretPayload(ReadOnlySpan<byte> bytes)
    {
        var key = bytes[0];
        if (!TypeLookup.ContainsKey(key))
            return null;
        Type type = TypeLookup[key];
        var created = Activator.CreateInstance(type, bytes);
        return created;
    }

TypeLookup maps numeric values to class types, in a weird sort of factory method pattern. However when changing my codebase to use ReadOnlySpan over byte[] I now get a compiler error that bytes isn't an object, which it isn't.

Is there another way to do this? I believe Activator tries to find the best ctor based on what I pass in, seems I need to do this more explicitly. Can I use reflection another way or have I found a case reflection can't emulate calling the ctor directly?