curl --request POST \
  --url https://whitebit.com/api/v4/sub-account/api-key/ip-address/create \
  --header 'Content-Type: application/json' \
  --header 'X-TXC-APIKEY: <api-key>' \
  --data '
{
  "apiKeyId": "<string>",
  "ip": "<string>"
}
'

{
  "data": [
    "<string>"
  ]
}