Can't access POST Variables sent from angular 4 in slim php - json

Question

I'm trying to build a little Angular 4 Application with a rest api build with slim php. I'm having touble to access the POST variables on specific routes, while it works perfectly on at least one route. Here is my code:
// Log In A League { "email": $email, "pass": $pass }
$app->post('/api/users/league-login', function(Request $request, Response $response){
require "user_management/league_login.php";
$logIn = new LeagueLogIn();
$logIn->logIn($request->getParam("email"), $request->getParam("pass"));
});
Angular sends this JSON:
Object { email: “test#test.com", pass: "000" }
This works perfectly. But on this rout I can't access the POST variables with $request->getParam()
// Add Team To A League { "name": $name, "email": $email }
$app->post('/api/league/team', function(Request $request, Response $response){
require "user_management/team_create.php";
$user = authorizeToken($request->getHeader('Authorization'));
$teamCreate = new TeamCreate();
$teamCreate->create($request->getParam("name"), $request->getParam("email"), $user);
});
Angular sends this JSON
Object { name: "name", email: "test2#test.com" }
As soon as I add double quotes on the keys manually for the request:
Object { "name": "name", "email": "test2#test.com" }
it works perfectly.
Does somebody know what kind of problem this is, or what I'm overlooking?