curl --request POST \
  --url https://api.cadanapay.com/v1/users/{userId}/tax-forms \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "fileId": "517075a2-17db-469f-9481-eb8347cb920c",
  "type": "W9",
  "w9": {
    "firstName": "John",
    "lastName": "Doe",
    "email": "john.doe@email.com",
    "entityType": "Individual",
    "taxIdType": "SSN",
    "taxIdNumber": "123456789",
    "address": {
      "line1": "House 1",
      "city": "New York City",
      "state": "NY",
      "postalCode": "10001",
      "countryCode": "US"
    }
  }
}
'

import requests

url = "https://api.cadanapay.com/v1/users/{userId}/tax-forms"

payload = {
    "fileId": "517075a2-17db-469f-9481-eb8347cb920c",
    "type": "W9",
    "w9": {
        "firstName": "John",
        "lastName": "Doe",
        "email": "john.doe@email.com",
        "entityType": "Individual",
        "taxIdType": "SSN",
        "taxIdNumber": "123456789",
        "address": {
            "line1": "House 1",
            "city": "New York City",
            "state": "NY",
            "postalCode": "10001",
            "countryCode": "US"
        }
    }
}
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({
    fileId: '517075a2-17db-469f-9481-eb8347cb920c',
    type: 'W9',
    w9: {
      firstName: 'John',
      lastName: 'Doe',
      email: 'john.doe@email.com',
      entityType: 'Individual',
      taxIdType: 'SSN',
      taxIdNumber: '123456789',
      address: {
        line1: 'House 1',
        city: 'New York City',
        state: 'NY',
        postalCode: '10001',
        countryCode: 'US'
      }
    }
  })
};

fetch('https://api.cadanapay.com/v1/users/{userId}/tax-forms', 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.cadanapay.com/v1/users/{userId}/tax-forms",
  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([
    'fileId' => '517075a2-17db-469f-9481-eb8347cb920c',
    'type' => 'W9',
    'w9' => [
        'firstName' => 'John',
        'lastName' => 'Doe',
        'email' => 'john.doe@email.com',
        'entityType' => 'Individual',
        'taxIdType' => 'SSN',
        'taxIdNumber' => '123456789',
        'address' => [
                'line1' => 'House 1',
                'city' => 'New York City',
                'state' => 'NY',
                'postalCode' => '10001',
                'countryCode' => 'US'
        ]
    ]
  ]),
  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.cadanapay.com/v1/users/{userId}/tax-forms"

	payload := strings.NewReader("{\n  \"fileId\": \"517075a2-17db-469f-9481-eb8347cb920c\",\n  \"type\": \"W9\",\n  \"w9\": {\n    \"firstName\": \"John\",\n    \"lastName\": \"Doe\",\n    \"email\": \"john.doe@email.com\",\n    \"entityType\": \"Individual\",\n    \"taxIdType\": \"SSN\",\n    \"taxIdNumber\": \"123456789\",\n    \"address\": {\n      \"line1\": \"House 1\",\n      \"city\": \"New York City\",\n      \"state\": \"NY\",\n      \"postalCode\": \"10001\",\n      \"countryCode\": \"US\"\n    }\n  }\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.cadanapay.com/v1/users/{userId}/tax-forms")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"fileId\": \"517075a2-17db-469f-9481-eb8347cb920c\",\n  \"type\": \"W9\",\n  \"w9\": {\n    \"firstName\": \"John\",\n    \"lastName\": \"Doe\",\n    \"email\": \"john.doe@email.com\",\n    \"entityType\": \"Individual\",\n    \"taxIdType\": \"SSN\",\n    \"taxIdNumber\": \"123456789\",\n    \"address\": {\n      \"line1\": \"House 1\",\n      \"city\": \"New York City\",\n      \"state\": \"NY\",\n      \"postalCode\": \"10001\",\n      \"countryCode\": \"US\"\n    }\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.cadanapay.com/v1/users/{userId}/tax-forms")

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  \"fileId\": \"517075a2-17db-469f-9481-eb8347cb920c\",\n  \"type\": \"W9\",\n  \"w9\": {\n    \"firstName\": \"John\",\n    \"lastName\": \"Doe\",\n    \"email\": \"john.doe@email.com\",\n    \"entityType\": \"Individual\",\n    \"taxIdType\": \"SSN\",\n    \"taxIdNumber\": \"123456789\",\n    \"address\": {\n      \"line1\": \"House 1\",\n      \"city\": \"New York City\",\n      \"state\": \"NY\",\n      \"postalCode\": \"10001\",\n      \"countryCode\": \"US\"\n    }\n  }\n}"

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

{
  "id": "ca51f42c-0adc-4a77-8dd1-a03dd4fb955f"
}

{
  "code": "invalid_request_body",
  "message": "The request body provided is not valid",
  "params": {
    "field": "Value is invalid."
  }
}

{
  "code": "internal_error",
  "message": "An unexpected error occurred. Please try again later."
}