Declare the request variable that can receive the data of the request header and body in the Statements block.
You can use request data conveniently by declaring the request variable and fetching the necessary data among the data in the header and body into the fetch block.
In addition, if you declare only the data you need in the request variable as a separate variable and insert a value, you can check and use only some data without calling the entire data, which improves readability and work productivity.