curl --request POST \
  --url https://api.cpln.io/org/{org}/ipset \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "description": "<string>",
  "tags": {},
  "spec": {
    "link": "<string>",
    "locations": [
      {
        "name": "<string>",
        "retentionPolicy": "keep"
      }
    ]
  }
}
'

{
  "status": 123,
  "message": "<string>",
  "code": "<string>",
  "details": {},
  "id": "<string>"
}