No data when posting to the metrics API

[cscetbon]

I'm following https://docs.newrelic.com/docs/data-apis/ingest-apis/metric-api/report-metrics-metric-api/
Using a LICENSE key on a new account I'm trying to send metrics using the curl command from your documentation but nothing appears when I run the corresponding NRQL query you provide. Your status page says everything is fine so I can't see why I don't see what I send. I've been trying since yesterday so it can't be a timing issue ...

curl -vvv -k -H "Content-Type: application/json" \
-H "Api-Key: ${MY_LICENSE_KEY}" \
-X POST https://metric-api.newrelic.com/metric/v1 \
--data '[{
        "metrics":[{
            "name":"memory.heap",
            "type":"gauge",
            "value":54,
            "timestamp":CURRENT_TIME,
            "attributes":{"host.name":"dev.server.com"}
        }]
    }]'

You can see the empty graph 👇

You can take a look at the log of my curl command here

[cscetbon]

Closing this as the error was just coming from the timestamp. I thought that CURRENT_TIME in the documentation was an internal function available but it's not