curl --request POST \
  --url 'https://api.flashcat.cloud/person/app-key/enable?app_key=' \
  --header 'Content-Type: <content-type>' \
  --header 'Flashcat-Mfa-Code: <flashcat-mfa-code>' \
  --header 'Flashcat-Mfa-Device: <flashcat-mfa-device>' \
  --data '
{
  "key_id": 123,
  "person_id": 123
}
'

{
  "error": {
    "code": "<string>",
    "message": "<string>"
  }
}