pageNum
Point the page number with $p in current url, you can use{} to eval result string from page number, like {$p*25+1}
Example:
"pageNum": "&start={15*($p-1)}"
Count page num as 2 when url is "&start=15"
Point the page number with $p in current url, you can use{} to eval result string from page number, like {$p*25+1}
"pageNum": "&start={15*($p-1)}"
Count page num as 2 when url is "&start=15"