I am trying to register a user via the web api using Angular 2. My call is as follows:

this.http.post('http://localhost/Authenticated/api/account/register', JSON.stringify(this.cred)).subscribe(function (data) {
    console.log(data);
});

My form is defined:

<form id="userData" (submit)="submitForm()">
    <input type="text" name="userName" placeholder="Name" [(ngModel)]="cred.userName" />
    <input type="password" name="password" placeholder="Password" [(ngModel)]="cred.password"/>
    <input type="password" name="confirmPassword" placeholder="Password" [(ngModel)]="cred.confirmPassword"/>
    <input type="submit" id="register" value="Register" />
</form>

When I make a post I am getting an HTTP415 error:

HTTP415: UNSUPPORTED MEDIA TYPE - The server is refusing to service the request because the entity of the request is in a format not supported by the requested resource for the requested method.