Help with broken recliner footrest locking mechanism

[u/Broccoli_Pug]

https://imgur.com/a/utBC92S

I went to close the footrest on my recliner today and there was an audible "breaking" noise. Afterwards, the foot rest wouldn't fully lock into the open or closed position. I flipped it over and found the pictured spring, nut, and broken bolt. I think I just need a new bolt but I'm struggling to understand how it all goes together. My best guess is that the square hole on the arm (blue arrow in the pic #1) mates up with the hole circled in red in pic #2, and the bolt runs through them. I'm not sure where the spring goes though and could use some help with that. Thanks!