curl --request GET \
  --url https://api.recoupable.dev/api/catalogs/measurements \
  --header 'x-api-key: <api-key>'

{
  "measurements": [
    {
      "isrc": "<string>",
      "title": "<string>",
      "playcount": 123,
      "measured_at": "2023-11-07T05:31:56Z"
    }
  ],
  "valuation": {
    "low": 123,
    "mid": 123,
    "high": 123
  },
  "total_streams": 123,
  "catalog_age_years": 123,
  "error": "<string>"
}