curl --request GET \
  --url https://api.sprucecollective.co.uk/subscriptions/credit-history \
  --header 'Authorization: <api-key>'

[
  {
    "created_at": "<string>",
    "credits_used": 123,
    "entries_created": 123,
    "id": "<string>",
    "raffle_id": "<string>",
    "raffle_name": "<string>",
    "subscription_id": "<string>",
    "usage_type": "<string>"
  }
]