Describe the solution you'd like

Describe the solution you'd like

The memo_service.go file is becoming increasingly long, pulling out comment logic and putting it in its own service will help. Handling memo and memo comment logic violates the single responsibility principle.
Type of feature

API
Additional context

See Discord conversation:
https://discord.com/channels/1017113925776588902/1099725880902815845/1345859707474284634

Type of feature

API

Additional context

No response