Configure JsonAPI
Configure API With JsonAPI Protocol, and Publish it.

Method Execution using JsonAPI
For Executing Methods, we have to provide "/execute" after particular model record. you can see below url example and request body
Request URL:
192.168.1.15:8018/user-jsonapi-apikey/sale.order/45/execute
Request Body:
{
"data": {
"method": "action_confirm",
"kwargs":{}
}
}
In Request Body, we have provide method-name in "method" and Parameters of method in "kwargs"
