try {
    var data = JSON.parse(value);
}
catch (error) {
    throw 'Failed to parse JSON of EtherLike-MIB discovery.';
}
var fields = ['{#SNMPVALUE}','{#IFOPERSTATUS}','{#IFALIAS}','{#IFNAME}','{#IFDESCR}'];
data.forEach(function (element) {
    fields.forEach(function (field) {
        element[field] = element[field] || '';
    });
});
return JSON.stringify(data);