curl --request PUT \
  --url https://api.smartmove.eu/m2m/api/fleets/v1/assets/activate \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "assets": [
    {
      "providerCountryCode": "AT",
      "providerCode": "ABC",
      "assetId": "AT*ABC*V100006"
    }
  ]
}
'