curl --request PATCH \
  --url https://api.eden.art/v2/collections/{collectionId}/creations/add \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '{
  "creationIds": [
    "<string>"
  ]
}'

{
  "collectionId": "<string>"
}