Accessing Hive server with V6 interface not working for me

I am not able to login into the Hive server using he following URL:

https://api-prod.bgchprod.info:443/omnia/auth/sessions

and this body:

{ “sessions”:
[{
“Content-Type”: “application/vnd.alertme.zoo-6.1+json”,
“Accept”: “application/vnd.alertme.zoo-6.1+json”,
“X-Omnia-Client”: “Hive Web Dashboard”,
“authorization”:[{
“username”: “myUserName”,
“password”: “myPassword”,
“caller”: “WEB”}]
}]
}

I get this response:

{
“error”: {
“reason”: “Not Acceptable”,
“allow”: [
“application/*+json”
]
}
}

What am I doing wrong?
Thanks

This is the string that I use:

"Content-Type: application/vnd.alertme.zoo-6.1+json" -H "Accept: application/vnd.alertme.zoo-6.2+json" -H "Content-Type: 'application/*+json'" -H "X-AlertMe-Client: Hive Web Dashboard" -d '{"sessions":[{"username":"'$USERID'", "password":"'$PW'","caller":"openhab"}]}'

Your ‘content type’ is different