@type t() :: %HookSniffAPI.Model.DeliveryAttempt{
  attempt_number: integer() | nil,
  created_at: DateTime.t() | nil,
  duration_ms: integer() | nil,
  error_message: String.t() | nil,
  id: String.t() | nil,
  response_body: String.t() | nil,
  status_code: integer() | nil
}