I am trying to make a call to get the Dns records with the following

curl /<ZoneID>/dns_records/batch \
    -H 'Content-Type: application/json' \
    -H "X-Auth-Email: <email>" \
    -H "X-Auth-Key: <Global API Key>" \
    -d '{}'

and all I am getting is

{ "result":null, "success":false, "errors":[ { "code":9207, "message":"Request body is invalid." } ], "messages":[] }

I copy pasted the call from Cloudflares documentation and cant understand what is wrong.