curl --request POST \
  --url https://api.example.com/api/agency-portal/Invitations/{linkingCode}/Create-Instance \
  --header 'Content-Type: application/json' \
  --data '
{
  "companyName": "<string>",
  "tradingName": "<string>",
  "firstName": "<string>",
  "lastName": "<string>",
  "email": "<string>"
}
'