feat(backend): remaining tickets for event

[0xLucqs]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 83.33333% with 8 lines in your changes missing coverage. Please review.

Project coverage is 82.66%. Comparing base (7380a18) to head (6354cd7).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
backend/lib/peach/calldata_builder.ex	73.07%	7 Missing ⚠️
backend/lib/starknet.ex	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #8      +/-   ##
==========================================
- Coverage   82.68%   82.66%   -0.02%     
==========================================
  Files          21       24       +3     
  Lines         179      225      +46     
==========================================
+ Hits          148      186      +38     
- Misses         31       39       +8     

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