curl --request POST \
  --url https://api.eden.art/manna/vouchers/redeem \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '{
  "code": "<string>"
}'

{
  "success": true,
  "action": "<string>",
  "manna": 123,
  "transactionId": "<string>"
}