curl --request POST \
  --url https://api.roxom.com/v1/accounts/leverage/{symbol} \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --header 'X-API-Signature: <api-key>' \
  --data '
{
  "leverage": "<string>"
}
'

{
  "data": {
    "newLeverage": "<string>"
  },
  "error": true
}