Participant Update - Preferred Language

 To modify the preferred language associated with an existing account, employ the /api/v2/account/set endpoint. To modify a specific visitor, identify them using one of EP's accepted matching methods and employ the subsequent fields:

• event_id: The unique identifier for the event. (integer)

• id: Account ID (integer)

• default_lang: User´s preferred language (ISO2)

Notice: To retrieve the supported languages within an Event account, please click HERE