curl --request GET \
  --url https://app.sure.am/api/v1/budgets/{id} \
  --header 'X-Api-Key: <api-key>'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "start_date": "2023-12-25",
  "end_date": "2023-12-25",
  "name": "<string>",
  "currency": "<string>",
  "initialized": true,
  "current": true,
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "budgeted_spending": "<string>",
  "budgeted_spending_cents": 123,
  "expected_income": "<string>",
  "expected_income_cents": 123,
  "allocated_spending": "<string>",
  "allocated_spending_cents": 123,
  "actual_spending": "<string>",
  "actual_spending_cents": 123,
  "actual_income": "<string>",
  "actual_income_cents": 123,
  "available_to_spend": "<string>",
  "available_to_spend_cents": 123,
  "available_to_allocate": "<string>",
  "available_to_allocate_cents": 123
}