let params : [String : Any] =["param1":param1,"param2":param2]
let headers : HTTPHeaders = ["authorization" : apiKey]

Alamofire.request(MY_URL, method: .post, parameters: params, headers: headers).responseJSON {
     response in
     switch response.result{
     case .success(let result):

     //other code here
}

$app->map('/MY_URL','authenticate',function ()use($app){

}

let headers: HTTPHeaders = [
    "Authorization": "Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==",
    "Accept": "application/json"
]

Alamofire.request("https://httpbin.org/headers", headers: headers).responseJSON { response in
    debugPrint(response)
}

let url = "WEB API URL"
    let headers = [
        "Content-Type":"application/x-www-form-urlencoded",
        "authorization" : "apiKey"
    ]

    let configuration = URLSessionConfiguration.default
    configuration.requestCachePolicy = .reloadIgnoringLocalCacheData
    let params : [String : Any] = ["param1":param1,"param2":param2]

    Alamofire.request(url, method: .post, parameters: params as? Parameters, encoding: URLEncoding.httpBody, headers: headers).responseJSON { response in

        if let JSON = response.result.value {
            print("JSON: (JSON)")

        }else{
            print("Request failed with error: ",response.result.error ?? "Description not available :(")

        }
    }

["Authorization": "Bearer <#your_token#>"]

$ curl -i http://localhost/slim-token-authentication/example/restrict -H "Authorization: Bearer usertokensecret"

/// Creates a `DataRequest` using the default `SessionManager` to retrieve the contents of the specified `url`,
    /// `method`, `parameters`, `encoding` and `headers`.
    ///
    /// - parameter url:        The URL.
    /// - parameter method:     The HTTP method. `.get` by default.
    /// - parameter parameters: The parameters. `nil` by default.
    /// - parameter encoding:   The parameter encoding. `URLEncoding.default` by default.
    /// - parameter headers:    The HTTP headers. `nil` by default.
    ///
    /// - returns: The created `DataRequest`.
public func request(_ url: URLConvertible, method: Alamofire.HTTPMethod = default, parameters: Parameters? = default, encoding: ParameterEncoding = default, headers: HTTPHeaders? = default) -> Alamofire.DataRequest

Alamofire.request("https://...",
                   method: .get,
                   parameters: ["myKey1": "myValue1"],
                   encoding: JSONEncoding.default,
                   headers: self.authHeader).responseJSON { response in
                        //your response
                   }