curl --location -g --request POST 'https://api.iotwireless.{region}.amazonaws.com/custom-metric/' \
--header 'Content-Type: application/json' \
--data-raw '{
"displayName": "string",
"metricType": "string-list",
"tags": [
{
"Key": "string",
"Value": "string"
}
],
"clientRequestToken": "string"
}'{
"metricName": "string",
"metricArn": "string"
}