HTTP Request json body not working with inline variables

This is my request body applying your possible workaround @gourab

{
	\"u_actiontype\": \"Transfer\",
	\"u_department\": \"{{$.getIdentity.attributes.department}}\",
	\"u_linemanager\": \"{{$.getIdentity1.attributes.displayName}}\",
	\"u_jobfunction\": \"{{$.getIdentity.attributes.jobtitle}}\",
	\"u_location\": \"{{$.getIdentity.attributes.location}}\",
	\"u_enddate\": \"{{$.getIdentity.attributes.endDate}}\",
	\"u_firstname\": \"{{$.getIdentity.attributes.firstname}}\",
	\"u_lastname\": \"{{$.getIdentity.attributes.lastname}}\",
	\"u_sfid\": \"{{$.getIdentity.attributes.sfId}}\",
	\"u_transferdate\": \"{{$.getIdentity.modified}}\"
}

But with that, the json body is not valid:

Could you @colin_mckibben please provide feedback on this topic/issue?