[ANCHOR-435]: Update event callback schema

[JakeUrban]

Lets hold off on this until we merge everything from SoftServe

Description

Updates the schema used when sending event callbacks to the business server.

Context

Current schema:

{
  timestamp: 1693524508,
  payload: {
    type: 'transaction_created',
    id: '19f8caad-0214-4ef3-99a6-134f59a3dbbe',
    sep: '24',
    transaction: {
      id: '29f84658-7090-47b7-874d-5d4ffa592a39',
      sep: '24',
      kind: 'deposit',
      status: 'incomplete',
      amount_expected: [Object],
      started_at: '2023-08-31T23:28:25.120858Z',
      destination_account: 'GA57OTKBRMLNMYIMK3VL23HI6XVCB7P2H5Q353U3ZEQR6HIE5TBAXY3O'
    }
  }
}

New schema:

{
  id: '19f8caad-0214-4ef3-99a6-134f59a3dbbe',
  timestamp: '2023-08-31T23:28:25.120858Z',
  type: 'transaction_created',
  payload: {
    transaction: {
      id: '29f84658-7090-47b7-874d-5d4ffa592a39',
      sep: '24',
      kind: 'deposit',
      status: 'incomplete',
      amount_expected: [Object],
      started_at: '2023-08-31T23:28:25.120858Z',
      destination_account: 'GA57OTKBRMLNMYIMK3VL23HI6XVCB7P2H5Q353U3ZEQR6HIE5TBAXY3O'
    }
  }
}

In the current schema, the sep field is duplicated, the timestamp uses a unix timestamp instead a properly formatted datetime string, and the id and type fields are inside payload when they are really metadata that should be outside payload.

Testing

./gradlew test

Known limitations

[github-actions]

Code Coverage

Overall Project	28.17% -0.27%	❌
Files changed	0%	❌

Module	Coverage
api-schema	1.78% -0.59%	❌

Files

Module	File	Coverage
api-schema	SendEventRequestPayload.java	0%	❌
	SendEventRequest.java	0% -12.82%	❌

[lijamie98]

The new schema makes sense to me.