can I plug a mixer into a mixer

Hi, I'm kind of new to this. I am recording audio and getting a constant sort of noise. I've included a sample where the noise has been recorded by itself.

I'm currently running a setup where the audio comes from a wireless Shure microphone receiver, to a live mixing console. A Presonus StudioLive 32.4.2AI mixing console. The console is used for live sound mixing.

Hey folks,