@type t() :: %DodoPayments.CustomerCreditBalance{
  balance: (String.t() | number()) | nil,
  created_at: String.t() | nil,
  credit_entitlement_id: String.t() | nil,
  customer_id: String.t() | nil,
  extra: map(),
  id: String.t() | nil,
  last_transaction_at: String.t() | nil,
  overage: (String.t() | number()) | nil,
  updated_at: String.t() | nil
}