Configuring Instance server to send WhatsApp messages using API Chains
This link template is used for additional instance actions on the chain path. At the moment, only the "SendMessage" method is available. Unlike the lower link element, there is NO automatic configuration of the webhook in this link template.
To configure the template as well as in the lower link, you need to configure either a static or dynamic query.
the ariant of the answer can be found in our official documentation.