err := json.Unmarshal([]byte(jsonStr), &m)
	if err != nil {
		log.Warnf("Env variable with value %q failed json unmarshal: %v", jsonStr, err)
	}
	return
}

func extractAttributesMetadata(envVars []string, plat platform.Environment, meta *model.BootstrapNodeMetadata) {
	for _, varStr := range envVars {
		name, val := parseEnvVar(varStr)
		switch name {
		case "ISTIO_METAJSON_LABELS":

		// we can't just equate proxy workload labels to node meta labels as it may be customized by user
		// with `ISTIO_METAJSON_LABELS` env (pkg/bootstrap/config.go extractAttributesMetadata).
		// so, we fill the `ISTIO_METAJSON_LABELS` as well.
		for k, v := range node.Metadata.StaticLabels {
			node.Labels[k] = v
		}
		for k, v := range labels {
			node.Labels[k] = v
		}
	} else {