curl --request POST \
  --url https://{subdomain}.nudj.cx/api/v2/integration/achievements/{achievementId}/claim \
  --header 'x-api-token: <api-key>'

{
  "success": true,
  "achievementId": "<string>",
  "message": "<string>",
  "rewardAssetIds": [
    "<string>"
  ],
  "rewardEntryIds": [
    "<string>"
  ]
}