Receive data with authentication

[marine_adz]

We are trying to receive data from a third-party API that insists on providing authentication data in the header.:

{
  "Content-Type": "application/json",
   "access_id": "myid12345",
   "access_secret": "mysecret123"
}

This is rejected by the Power Automate 'When a HTTP request is received' trigger with the following in the response:

  {'error':{'code':'AuthorizationFailed','message':'The authentication credentials are not valid.'}}

It seems that this trigger only accepts unauthenticated data - is that correct?

Is this something that we could use in a custom connector?