curl --location --request GET 'https://api.cloudflare.com/client/v4/zones//settings/origin_max_http_version'
{
"errors": [],
"messages": [],
"result": {
"id": "origin_max_http_version",
"modified_on": "2014-01-01T05:20:00.12345Z",
"value": "2"
},
"success": true
}