curl --request POST \
  --url https://api.portkey.ai/v1/collections \
  --header 'Content-Type: application/json' \
  --header 'x-portkey-api-key: <api-key>' \
  --data '
{
  "name": "<string>",
  "workspace_id": "<string>",
  "parent_collection_id": "<string>"
}
'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "slug": "<string>"
}