curl --request POST \
  --url https://api.helicone.ai/v1/prompt/create \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
  "metadata": {},
  "prompt": "<any>",
  "userDefinedId": "<string>"
}'

{
  "data": {
    "id": "<string>",
    "prompt_version_id": "<string>"
  }
}