curl --request POST \
  --url https://api.fourthwall.com/channel-api/v1.0/previews \
  --header 'Content-Type: application/json' \
  --data '
{
  "productId": "<string>",
  "regions": [
    {
      "region": "<string>",
      "imageId": "<string>",
      "placementId": "<string>",
      "fillAllPlacements": true
    }
  ],
  "colors": [
    "<string>"
  ],
  "sizes": [
    "<string>"
  ]
}
'

import requests

url = "https://api.fourthwall.com/channel-api/v1.0/previews"

payload = {
    "productId": "<string>",
    "regions": [
        {
            "region": "<string>",
            "imageId": "<string>",
            "placementId": "<string>",
            "fillAllPlacements": True
        }
    ],
    "colors": ["<string>"],
    "sizes": ["<string>"]
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    productId: '<string>',
    regions: [
      {
        region: '<string>',
        imageId: '<string>',
        placementId: '<string>',
        fillAllPlacements: true
      }
    ],
    colors: ['<string>'],
    sizes: ['<string>']
  })
};

fetch('https://api.fourthwall.com/channel-api/v1.0/previews', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.fourthwall.com/channel-api/v1.0/previews",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'productId' => '<string>',
    'regions' => [
        [
                'region' => '<string>',
                'imageId' => '<string>',
                'placementId' => '<string>',
                'fillAllPlacements' => true
        ]
    ],
    'colors' => [
        '<string>'
    ],
    'sizes' => [
        '<string>'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.fourthwall.com/channel-api/v1.0/previews"

	payload := strings.NewReader("{\n  \"productId\": \"<string>\",\n  \"regions\": [\n    {\n      \"region\": \"<string>\",\n      \"imageId\": \"<string>\",\n      \"placementId\": \"<string>\",\n      \"fillAllPlacements\": true\n    }\n  ],\n  \"colors\": [\n    \"<string>\"\n  ],\n  \"sizes\": [\n    \"<string>\"\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.fourthwall.com/channel-api/v1.0/previews")
  .header("Content-Type", "application/json")
  .body("{\n  \"productId\": \"<string>\",\n  \"regions\": [\n    {\n      \"region\": \"<string>\",\n      \"imageId\": \"<string>\",\n      \"placementId\": \"<string>\",\n      \"fillAllPlacements\": true\n    }\n  ],\n  \"colors\": [\n    \"<string>\"\n  ],\n  \"sizes\": [\n    \"<string>\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.fourthwall.com/channel-api/v1.0/previews")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"productId\": \"<string>\",\n  \"regions\": [\n    {\n      \"region\": \"<string>\",\n      \"imageId\": \"<string>\",\n      \"placementId\": \"<string>\",\n      \"fillAllPlacements\": true\n    }\n  ],\n  \"colors\": [\n    \"<string>\"\n  ],\n  \"sizes\": [\n    \"<string>\"\n  ]\n}"

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

{
  "pipelineId": "<string>",
  "images": [
    {
      "url": "<string>",
      "width": 123,
      "height": 123,
      "style": "<string>",
      "color": "<string>",
      "size": "<string>",
      "region": "<string>"
    }
  ],
  "customizationId": "<string>"
}