var lookup = {},
    result = [];

JSON.parse(value).forEach(function (item) {
        var envoy_http_conn_manager_prefix = item.labels.envoy_http_conn_manager_prefix;

        if (lookup[envoy_http_conn_manager_prefix]) {
            return;
        }
        lookup[envoy_http_conn_manager_prefix] = 1;
        result.push({
            '{#CONN_MANAGER}': envoy_http_conn_manager_prefix
        });
});

return JSON.stringify(result);