Link a WhatsApp template to an app. This allows the app to receive webhook events for template lifecycle changes (created, updated, deleted, approved, rejected, etc.).
Admin API key (format: sk_admin_*) for organization-level operations
The template ID to link
"wht_abc123"
The app ID to link to this template
"app_abc123"
Template linked successfully (or link already existed)
The ID of the app-template link
"awat_abc123"