magento2 – json_decode is not working properly in magento 2.4.0

I am trying to decode the JSON in normal string and print that in the info log in Magento 2.4.0 but I am getting nothing in the info log. Adding the code below anyone please suggest a solution for this.

Code I am using

public function execute()
{
$result = $this->resultJsonFactory->create();
$isSuccess = $this->tracking->createApi();
$jsonresponse = json_decode($isSuccess); // decoding here
$this->logger->info(var_dump($jsonresponse)); // trying to print in info log
return $result->setData((‘success’ => $isSuccess));
}

$isSuccess – this variable has the below JSON data

Coveolog.INFO: {“sourceType”:”PUSH”,”id”:”dsspartnersorggrc3y48w-uk7awlmkozpufpe6pwaeoycmpy”,”name”:”DSS-Coveo_M2-Integration-B2C-product-en_US”,”sourceVisibility”:”SHARED”,”customParameters”:{},”information”:{“sourceStatus”:{“type”:”CREATING”,”timestamp”:1617776580670,”allowedOperations”:(“DELETE”)},”numberOfDocuments”:0,”documentsTotalSize”:0},”pushEnabled”:true,”onPremisesEnabled”:false,”streamEnabled”:false,”logicalIndex”:”default”,”preConversionExtensions”:(),”postConversionExtensions”:(),”permissions”:{“permissionLevels”:({“name”:”Source Specified Permissions”,”permissionSets”:({“name”:”Shared”,”permissions”:({“allowed”:true,”identityType”:”GROUP”,”identity”:”@“,”securityProvider”:”Email Security Provider”})})})},”urlFilters”:({“filter”:”*”,”includeFilter”:true,”filterType”:”WILDCARD”}),”ocrFileTypes”:(),”resourceId”:”dsspartnersorggrc3y48w-uk7awlmkozpufpe6pwaeoycmpy”} () ()