Issue with POST requests

[szankelDvag]

We are using this plugin to enable SSL-Pinning in a Ionic 2 enviroment. Unfortunately the POST-requests fail with JSON-parse error on the serverside. When I JSON.stringify the body it also doesn't work since an object is expected.

Did anybody else have similar issues?

Cordova CLI: 6.5.0
Ionic Framework Version: 2.0.0
Ionic CLI Version: 2.2.1
Ionic App Lib Version: 2.2.0
Ionic App Scripts Version: 1.1.4
ios-deploy version: 1.9.1
ios-sim version: Not installed
OS: macOS Sierra
Node Version: v7.6.0
Xcode version: Xcode 8.3.2 Build version 8E2002

Thanks for the help.