curl --request POST \
  --url https://api.sanka.com/v1/public/meters \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "externalId": "<string>",
  "contactId": "<string>",
  "contactExternalId": "<string>",
  "companyId": "<string>",
  "companyExternalId": "<string>",
  "itemId": "<string>",
  "itemExternalId": "<string>",
  "subscriptionId": "<string>",
  "subscriptionExternalId": "<string>",
  "usage": 123,
  "usageStatus": "<string>",
  "usageAt": "<string>"
}
'

{
  "ok": true,
  "status": "<string>",
  "external_id": "<string>",
  "meter_id": "<string>",
  "ctx_id": "<string>"
}