curl --location --request POST 'https://api.whatsiplus.com/sendMsg/APIKEY' \
--form 'phonenumber="+15551234567"' \
--form 'message="This is a test message"' \
--form 'schedule="1724160037"' \
--form 'link="https://example.com/image.jpg"'
{
"success": "true",
"message": "Added to the message queue",
"messageId": 565
}