HTML:
-----------------------------2391265022744
Content-Disposition: form-data; name="uri"

https://host/dashboard/business/profile
-----------------------------2391265022744
Content-Disposition: form-data; name="caller"

function onerror(event) {
prompt(2)
}
-----------------------------2391265022744
Content-Disposition: form-data; name="dom"

  @media screen and (min-width: 1258px){

...
etc. и еще куча всего посылается...
...

}

-----------------------------297832247625910
Content-Disposition: form-data; name="arguments"

2
-----------------------------297832247625910--