curl --request POST \
  --url https://api.contro.me/v1/partner/sandbox/reset-balance \
  --header 'Content-Type: application/json' \
  --header 'x-contro-api-key: <api-key>' \
  --data '
{
  "amount": 1000000
}
'

{
  "balance": 123,
  "currency": "<string>"
}