Bad request requsition http post angular

Question

When performing an http post request, I am receiving:

Object { headers: {...}, status: 400, statusText: "Bad Request", url: "https://hidden address", ok: false, name: "Httperrorresponse", message: "Http Failure Response is https://hidden address 400 Bad Request", error: {...} }

My service that sends the post:

  pesquisaEmail(email): Observable<any>{
    let headers = new HttpHeaders();
    headers = headers.set('Content-Type', 'application/json; charset=utf-8');
    headers.append('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');
    this.token = localStorage.getItem('currentUser');

    return this._http.post<any>(AppSettings.API_ENDPOINT_EMAIL,
      {email: email,
      token_jc: this.token },
      { headers: headers, observe: 'response' })
        .pipe(
          map((response) => ({data: response.body, status: response.status}))
        )}

my backend api expects an email key with email and another token key with token value that is stored in localstorage. 'Cause I get a bad request?