...
curl -X POST -D headers -H "content-type:application/json" http://x48-byod.mycsolab.com:5000/v3/auth/tokens -d@auth.json
3- do some POST
Example to get "configure-sites"
...
...
curl -X POST -D headers -H "content-type:application/json" http://x48-byod.mycsolab.com:5000/v3/auth/tokens -d@auth.json
...