You will need a customer's phone number and a registered WhatsApp template.
Placeholders
The WhatsApp template contains placeholders that are enclosed in double curly braces - {{, }}. The placeholders in the following template are name and date:
Hello
{{name}}! You can expect the delivery{{date}}.
Response
The response will contain interpolated content that was created by replacing placeholders with substitutions. Since templates are localized, you will always receive only the content of the default language.