I need to write a suitelet to get data submitted from html page as json response and use this data to create a sales order page

This is sample response from html submit button

GET – https://www.xyz.com/example.html/?callback=jQuery545221&{%22orderdetail%22:[{%22id%22:%2289%22,%22quantity%22:2,%22price%22:%2213.96%22,%22amount%22:%2227.92%22},
{%22id%22:%2280%22,%22quantity%22:1,%22price%22:%2212.95%22,%22amount%22:%2212.95%22},
{%22id%22:%2281%22,%22quantity%22:2,%22price%22:%2210.95%22,%22amount%22:%2221.90%22},
{%22id%22:%2283%22,%22quantity%22:3,%22price%22:%2212.56%22,%22amount%22:%2237.68%22},
{%22id%22:%2275%22,%22quantity%22:4,%22price%22:%2212.95%22,%22amount%22:%2251.80%22}],
%22customer_id%22:%22180%20xyz%20abc%22,%22total_amount%22:%22152.25%22}&_=1580411441286

where id = 89 , quantity = 2, price = 13.96, amount = 27.92 (2*13.96) in first line
id = 80 , quantity = 1, price = 12.95, amount = 12.95 (1*12.95) in second line and so on’
here are total 5 different items in same order (in array orders)
and in last line
there is customer_id =180 xyz abc , total amount = 152.25

I need help in processing this response to suitelet to create a sales order.