Get a scheduled Pix payment.

For ONCE and RECURRING schedulers, set showPreview=true to include executions_preview (a preview of upcoming executions that will be created in the future). For PRESET schedulers, executions_preview is never returned because all executions are created upfront — retrieve them through the List Pix scheduler executions endpoint instead.

Note: This endpoint takes an account token - an access token encoded with a Pismo accound ID.