Send a WhatsApp template message

curl --request POST \
  --url https://app.kapso.ai/api/v1/whatsapp_templates/{template_id}/send_template \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '{
  "template": {
    "phone_number": "+123456789012",
    "template_parameters": [
      "John Smith",
      "Tomorrow at 2 PM"
    ],
    "header_type": "image",
    "header_params": "https://example.com/header-image.jpg",
    "header_filename": "invoice.pdf",
    "whatsapp_config_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "customer_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  }
}'

{
  "status": "success",
  "message": "Template message sent successfully",
  "template_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "template_name": "<string>",
  "response": {}
}