NGINX - Put file and get file from same IP address

Original query, unchanged.

let p = NGINXHTTPServer
| where HttpRequestMethod in~ ('POST', 'PUT')
| sort by EventStartTime asc
| summarize post_time=min(EventStartTime) by SrcIpAddr, tostring(UrlOriginal);
NGINXHTTPServer
| where HttpRequestMethod =~ 'GET'
| sort by EventStartTime asc
| summarize get_time=min(EventStartTime) by SrcIpAddr, tostring(UrlOriginal)
| join kind=innerunique (p) on UrlOriginal, SrcIpAddr
| extend second = datetime_diff('second',get_time,post_time)
| where second between (1 .. 300)
| project second, post_time, get_time, SrcIpAddr, UrlOriginal
| extend IPCustomEntity = SrcIpAddr, UrlCustomEntity = tostring(UrlOriginal)