Typed Inttegro request parameters.
@type t() :: %Inttegro.SchedulePayoutRequest{ destination_id: String.t(), execute_after: String.t() | nil, max_amount: integer() | nil, reference: String.t() }
@spec from_map(map()) :: t()
@spec new!(map() | keyword()) :: t()
@spec to_map(t()) :: map()