curl --request POST \
  --url https://api-next.ofauth.com/v2/access/users/lists/:listId/users \
  --header 'Content-Type: application/json' \
  --header 'apiKey: <api-key>' \
  --data '
{
  "userIds": [
    123
  ]
}
'

{
  "list": [
    {
      "id": 123,
      "username": "<string>",
      "name": "<string>",
      "isVerified": true,
      "avatar": "<string>",
      "avatarThumbs": {
        "c50": "<string>",
        "c144": "<string>"
      }
    }
  ],
  "hasMore": true,
  "nextOffset": 123
}