curl --request GET \
  --url https://api.youka.io/api/v1/credits \
  --header 'Authorization: Bearer <token>'

{
  "renewalDates": [
    "<string>"
  ],
  "topups": [
    {
      "id": "<string>",
      "originalAmount": 4503599627370495,
      "remaining": 4503599627370495,
      "expiresAt": "<string>"
    }
  ],
  "availableBalance": 4503599627370495,
  "subscription": {
    "renewsAt": "<string>"
  }
}