curl --request POST \
  --url https://api.decodahealth.com/billing/rule-set/create \
  --header 'API-KEY: <api-key>' \
  --header 'Content-Type: application/json' \
  --header 'TENANT: <tenant>' \
  --data '
{
  "name": "<string>",
  "description": "<string>",
  "rules": []
}
'

{
  "id": "<string>",
  "name": "<string>",
  "description": "<string>",
  "rules": []
}