fix: removed decoded address

[AnthonyLaw]

Current behavior

• All the addresses in the REST response are in decoded format.
• Example 98E0D138EAF2AC342C015FF0B631EC3622E8AFFA04BFCC56

What was the issue?

• Decoded address format is not user-friendly. We have feedback from the community and discussion, change the address to encoded format.
• Example TDQNCOHK6KWDILABL7YLMMPMGYRORL72AS74YVQ

What's the fix?

• Convert addresses from decoded to encoded (base32) format.
• updated unit test

[sonarcloud]

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0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[0x6861746366574]

@AnthonyLaw Before merging, could you adjust the issue to follow this format seen here?

As a rule of thumb, you want to describe these three things:

• What the current behaviour is.
• Why this is an issue.
• How you changed this behaviour.

I know it's a bit overkill for this change, but we want to get in a habit of doing this for each PR/issue.