curl --request GET \
  --url https://reelmirror.com/api/v1/billing/balance \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "balance_cents": 123,
    "balance_dollars": "<string>",
    "auto_reload": true,
    "reload_threshold_cents": 123,
    "reload_amount_cents": 123
  }
}