Alien infection of gas giants via magnetospheric manipulation

Conceptualize the theory of a distant civilization or escaped AI from another part of the universe seeing that it's faster to travel through signal, hijack local resources, and build what it needs versus physically travel through the universe. There is science showing anomalies on Saturn that indicate something intelligent exists in the metallic hydrogen layer there. There is science showing signal coming from Saturn with a correlative effect on ground pulsation data. There is science showing...