"fallbackValues": {
    "firstName": "dude"
}

curl --request POST \
  --url https://connect.routee.net/sms/campaign \
  --header 'authorization: Bearer 12dc9fe4-7df4-4786-8d7a-a46d307687f4' \
  --header 'content-type: application/json' \
  --data '{"body": "Hello [~firstName] a new version of MindPuzzle is available. Check it out", "groups" : [ "customers" ],"from": "mindpuzzle"}'

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/json");
RequestBody body = RequestBody.create(mediaType, "{\"body\": \"Hello [~firstName] a new version of MindPuzzle is available. Check it out\", \"groups\" : [ \"customers\" ],\"from\": \"mindpuzzle\"}");

Request request = new Request.Builder()
  .url("https://connect.routee.net/sms/campaign")
  .post(body)
  .addHeader("authorization", "Bearer 12dc9fe4-7df4-4786-8d7a-a46d307687f4")
  .addHeader("content-type", "application/json")
  .build();

Response response = client.newCall(request).execute();

var client = new RestClient("https://connect.routee.net/sms/campaign");
var request = new RestRequest(Method.POST);

request.AddHeader("content-type", "application/json");
request.AddHeader("authorization", "Bearer 12dc9fe4-7df4-4786-8d7a-a46d307687f4");
request.AddParameter("application/json", "{\"body\": \"Hello [~firstName] a new version of MindPuzzle is available. Check it out\", \"groups\" : [ \"customers\" ],\"from\": \"mindpuzzle\"}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);

<?php

$curl = curl_init();

curl_setopt_array($curl, array(
  CURLOPT_URL => "https://connect.routee.net/sms/campaign",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "{\"body\": \"Hello [~firstName] a new version of MindPuzzle is available. Check it out\", \"groups\" : [ \"customers\" ],\"from\": \"mindpuzzle\"}",
  CURLOPT_HTTPHEADER => array(
    "authorization: Bearer 12dc9fe4-7df4-4786-8d7a-a46d307687f4",
    "content-type: application/json"
  ),
));

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

import http.client

conn = http.client.HTTPSConnection("connect.routee.net")

payload = "{\"body\": \"Hello [~firstName] a new version of MindPuzzle is available. Check it out\", \"groups\" : [ \"customers\" ],\"from\": \"mindpuzzle\"}"

headers = {
    'authorization': "Bearer 12dc9fe4-7df4-4786-8d7a-a46d307687f4",
    'content-type': "application/json"
    }

conn.request("POST", "/sms/campaign", payload, headers)

res = conn.getresponse()
data = res.read()

print(data.decode("utf-8"))

require 'uri'
require 'net/http'

url = URI("https://connect.routee.net/sms/campaign")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_NONE

request = Net::HTTP::Post.new(url)
request["authorization"] = 'Bearer 12dc9fe4-7df4-4786-8d7a-a46d307687f4'
request["content-type"] = 'application/json'
request.body = "{\"body\": \"Hello [~firstName] a new version of MindPuzzle is available. Check it out\", \"groups\" : [ \"customers\" ],\"from\": \"mindpuzzle\"}"

response = http.request(request)
puts response.read_body

var settings = {
  "async": true,
  "crossDomain": true,
  "url": "https://connect.routee.net/sms/campaign",
  "method": "POST",
  "headers": {
    "authorization": "Bearer 12dc9fe4-7df4-4786-8d7a-a46d307687f4",
    "content-type": "application/json"
  },
  "processData": false,
  "data": "{\"body\": \"Hello [~firstName] a new version of MindPuzzle is available. Check it out\", \"groups\" : [ \"customers\" ],\"from\": \"mindpuzzle\"}"
}

$.ajax(settings).done(function (response) {
  console.log(response);
});

#import <Foundation/Foundation.h>

NSDictionary *headers = @{ @"authorization": @"Bearer 12dc9fe4-7df4-4786-8d7a-a46d307687f4",
                           @"content-type": @"application/json" };
NSDictionary *parameters = @{ @"body": @"Hello [~firstName] a new version of MindPuzzle is available. Check it out",
                              @"groups": @[ @"customers" ],
                              @"from": @"mindpuzzle" };

NSData *postData = [NSJSONSerialization dataWithJSONObject:parameters options:0 error:nil];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"https://connect.routee.net/sms/campaign"]
                                                       cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                   timeoutInterval:10.0];
[request setHTTPMethod:@"POST"];
[request setAllHTTPHeaderFields:headers];
[request setHTTPBody:postData];

NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request
                                            completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                                                if (error) {
                                                    NSLog(@"%@", error);
                                                } else {
                                                    NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *) response;
                                                    NSLog(@"%@", httpResponse);
                                                }
                                            }];
[dataTask resume];