curl --request POST \
  --url https://api.hubapi.com/crm/v3/lists/idmapping \
  --header 'Content-Type: application/json' \
  --header 'private-app: <api-key>' \
  --data '[
  "<string>"
]'

{
  "legacyListIdsToIdsMapping": [
    {
      "listId": "<string>",
      "legacyListId": "<string>"
    }
  ],
  "missingLegacyListIds": [
    "<string>"
  ]
}