curl --request POST \
  --url https://api.example.com/v1/assets/{asset_id}/previews \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "column_mappings": [
    {
      "source_column_name": "<string>",
      "target_column_name": "<string>",
      "data_type": "STRING",
      "unique": false,
      "nullable": true,
      "required": true
    }
  ],
  "csv": {
    "char_encoding": "UTF_8",
    "column_separator": ",",
    "quote_character": "\"",
    "header_row": 1,
    "first_data_row": 2,
    "date_format": "",
    "thousands": "<string>"
  },
  "page_number": 1,
  "page_size": 50,
  "include_load_date": false
}
'

import requests

url = "https://api.example.com/v1/assets/{asset_id}/previews"

payload = {
    "column_mappings": [
        {
            "source_column_name": "<string>",
            "target_column_name": "<string>",
            "data_type": "STRING",
            "unique": False,
            "nullable": True,
            "required": True
        }
    ],
    "csv": {
        "char_encoding": "UTF_8",
        "column_separator": ",",
        "quote_character": "\"",
        "header_row": 1,
        "first_data_row": 2,
        "date_format": "",
        "thousands": "<string>"
    },
    "page_number": 1,
    "page_size": 50,
    "include_load_date": False
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    column_mappings: [
      {
        source_column_name: '<string>',
        target_column_name: '<string>',
        data_type: 'STRING',
        unique: false,
        nullable: true,
        required: true
      }
    ],
    csv: {
      char_encoding: 'UTF_8',
      column_separator: ',',
      quote_character: '"',
      header_row: 1,
      first_data_row: 2,
      date_format: '',
      thousands: '<string>'
    },
    page_number: 1,
    page_size: 50,
    include_load_date: false
  })
};

fetch('https://api.example.com/v1/assets/{asset_id}/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.example.com/v1/assets/{asset_id}/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([
    'column_mappings' => [
        [
                'source_column_name' => '<string>',
                'target_column_name' => '<string>',
                'data_type' => 'STRING',
                'unique' => false,
                'nullable' => true,
                'required' => true
        ]
    ],
    'csv' => [
        'char_encoding' => 'UTF_8',
        'column_separator' => ',',
        'quote_character' => '"',
        'header_row' => 1,
        'first_data_row' => 2,
        'date_format' => '',
        'thousands' => '<string>'
    ],
    'page_number' => 1,
    'page_size' => 50,
    'include_load_date' => false
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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.example.com/v1/assets/{asset_id}/previews"

	payload := strings.NewReader("{\n  \"column_mappings\": [\n    {\n      \"source_column_name\": \"<string>\",\n      \"target_column_name\": \"<string>\",\n      \"data_type\": \"STRING\",\n      \"unique\": false,\n      \"nullable\": true,\n      \"required\": true\n    }\n  ],\n  \"csv\": {\n    \"char_encoding\": \"UTF_8\",\n    \"column_separator\": \",\",\n    \"quote_character\": \"\\\"\",\n    \"header_row\": 1,\n    \"first_data_row\": 2,\n    \"date_format\": \"\",\n    \"thousands\": \"<string>\"\n  },\n  \"page_number\": 1,\n  \"page_size\": 50,\n  \"include_load_date\": false\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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.example.com/v1/assets/{asset_id}/previews")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"column_mappings\": [\n    {\n      \"source_column_name\": \"<string>\",\n      \"target_column_name\": \"<string>\",\n      \"data_type\": \"STRING\",\n      \"unique\": false,\n      \"nullable\": true,\n      \"required\": true\n    }\n  ],\n  \"csv\": {\n    \"char_encoding\": \"UTF_8\",\n    \"column_separator\": \",\",\n    \"quote_character\": \"\\\"\",\n    \"header_row\": 1,\n    \"first_data_row\": 2,\n    \"date_format\": \"\",\n    \"thousands\": \"<string>\"\n  },\n  \"page_number\": 1,\n  \"page_size\": 50,\n  \"include_load_date\": false\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/v1/assets/{asset_id}/previews")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"column_mappings\": [\n    {\n      \"source_column_name\": \"<string>\",\n      \"target_column_name\": \"<string>\",\n      \"data_type\": \"STRING\",\n      \"unique\": false,\n      \"nullable\": true,\n      \"required\": true\n    }\n  ],\n  \"csv\": {\n    \"char_encoding\": \"UTF_8\",\n    \"column_separator\": \",\",\n    \"quote_character\": \"\\\"\",\n    \"header_row\": 1,\n    \"first_data_row\": 2,\n    \"date_format\": \"\",\n    \"thousands\": \"<string>\"\n  },\n  \"page_number\": 1,\n  \"page_size\": 50,\n  \"include_load_date\": false\n}"

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

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "detail": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "detail": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "detail": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "detail": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "detail": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "detail": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}