refactor(event_handler): refactoring encoder file

[leandrodamascena]

Issue number: closes #8121

Summary

Refactor json encoder function.

Changes

Please provide a summary of what's being changed

User experience

Please share what the user experience looks like before and after this change

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.64%. Comparing base (baec69b) to head (6036aa1).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #8126      +/-   ##
===========================================
+ Coverage    96.62%   96.64%   +0.01%     
===========================================
  Files          284      284              
  Lines        14087    14082       -5     
  Branches      1156     1153       -3     
===========================================
- Hits         13612    13609       -3     
+ Misses         345      344       -1     
+ Partials       130      129       -1     

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