С фидлером изначально работаю.
HTTP/1.1 400 Bad Request
Access-Control-Allow-Credentials: true
Access-Control-Allow-Methods: GET,POST,PUT,DELETE,HEAD,OPTIONS
cache-control: no-cache
Content-Type: application/json
Date: Sun, 17 Sep 2017 19:25:22 GMT
Server: nginx
x-newrelic-app-data...