@type t() :: %MollieAPI.Model.SubscriptionRequest{
  _links: MollieAPI.Model.EntitySubscriptionLinks.t() | nil,
  amount: MollieAPI.Model.Amount.t() | nil,
  applicationFee: MollieAPI.Model.EntitySubscriptionApplicationFee.t() | nil,
  canceledAt: String.t() | nil,
  createdAt: String.t() | nil,
  customerId: String.t() | nil,
  description: String.t() | nil,
  id: String.t() | nil,
  interval: String.t() | nil,
  mandateId: String.t() | nil,
  metadata: MollieAPI.Model.Metadata.t() | nil,
  method: MollieAPI.Model.SubscriptionMethod.t() | nil,
  mode: MollieAPI.Model.Mode.t() | nil,
  nextPaymentDate: String.t() | nil,
  profileId: String.t() | nil,
  resource: String.t() | nil,
  startDate: String.t() | nil,
  status: MollieAPI.Model.SubscriptionStatus.t() | nil,
  testmode: boolean() | nil,
  times: integer() | nil,
  timesRemaining: integer() | nil,
  webhookUrl: String.t() | nil
}