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