curl --request POST \
  --url 'https://api.stateset.com/api/v1/ar/credit-memos/{id}/apply' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "amount": "string",
  "invoice_id": "string"
}'

{
  "amount": "string",
  "applied_amount": "string",
  "created_at": "string",
  "credit_memo_number": "string",
  "customer_id": "string",
  "id": "string",
  "reason": "string",
  "status": "string",
  "unapplied_amount": "string"
}