const timeseries = [
  { name: 'Pressure sensor', assetId: 123 },
  { name: 'Temprature sensor', description: 'Pump abc', unit: 'C' },
];
const createdTimeseries = await client.timeseries.create(timeseries);

{
  "items": [
    {
      "id": 4503599627370496,
      "isString": true,
      "type": "<string>",
      "isStep": true,
      "createdTime": 1730204346000,
      "lastUpdatedTime": 1730204346000,
      "externalId": "<string>",
      "instanceId": {
        "space": "<string>",
        "externalId": "<string>"
      },
      "name": "<string>",
      "metadata": {},
      "unit": "<string>",
      "unitExternalId": "<string>",
      "assetId": 4503599627370496,
      "description": "<string>",
      "securityCategories": [
        123
      ],
      "dataSetId": 4503599627370496
    }
  ]
}