Mini cart not update the data after execute custom action

I have create a custom module and perform the action using ajax call. I have created the sections.xml and update the below code.

<?xml version="1.0"?> <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Customer:etc/sections.xsd">     <action name="southlincprotection/Index/Index">         <section name="cart"/>     </action> </config> 

but it is not working and not updating the minicart item after succesfull ajax execution. can anyone please let me where I am doing mistakes.

Package Name >> Southlinc

Module Name >> Protection

Controller >> Index >> Index.php

I have defined the frontname “southlincprotection” in routes.xml

my Ajax code is below

var param = 'quoteid=<?php echo $  quoteId; ?>&ajax=1';     $  .ajax({         showLoader: true,         url: '<?php echo $  baseUrl; ?>southlincprotection',         data: param,         type: "POST",         dataType: 'json'     });