curl --request POST \
  --url https://api.privy.io/v1/users/{user_id}/fiat/kyc \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --header 'privy-app-id: <privy-app-id>' \
  --data '
{
  "provider": "bridge-sandbox",
  "data": {
    "type": "individual",
    "first_name": "John",
    "last_name": "Doe",
    "email": "[email protected]",
    "phone": "+59898222122",
    "residential_address": {
      "street_line_1": "1234 Lombard Street",
      "street_line_2": "Apt 2F",
      "city": "San Francisco",
      "subdivision": "CA",
      "postal_code": "94109",
      "country": "USA"
    },
    "signed_agreement_id": "123",
    "birth_date": "1989-09-09",
    "identifying_information": [
      {
        "type": "ssn",
        "number": "111-11-1111",
        "issuing_country": "USA",
        "image_front": "data:image/jpeg;base64,/9j/4AAQSkZJRg...",
        "image_back": "data:image/jpeg;base64,/9j/4AAQSkZJRg..."
      }
    ]
  }
}
'

HttpResponse<String> response = Unirest.post("https://api.privy.io/v1/users/{user_id}/fiat/kyc")
  .header("privy-app-id", "<privy-app-id>")
  .header("Authorization", "Basic <encoded-value>")
  .header("Content-Type", "application/json")
  .body("{\n  \"provider\": \"bridge-sandbox\",\n  \"data\": {\n    \"type\": \"individual\",\n    \"first_name\": \"John\",\n    \"last_name\": \"Doe\",\n    \"email\": \"[email protected]\",\n    \"phone\": \"+59898222122\",\n    \"residential_address\": {\n      \"street_line_1\": \"1234 Lombard Street\",\n      \"street_line_2\": \"Apt 2F\",\n      \"city\": \"San Francisco\",\n      \"subdivision\": \"CA\",\n      \"postal_code\": \"94109\",\n      \"country\": \"USA\"\n    },\n    \"signed_agreement_id\": \"123\",\n    \"birth_date\": \"1989-09-09\",\n    \"identifying_information\": [\n      {\n        \"type\": \"ssn\",\n        \"number\": \"111-11-1111\",\n        \"issuing_country\": \"USA\",\n        \"image_front\": \"data:image/jpeg;base64,/9j/4AAQSkZJRg...\",\n        \"image_back\": \"data:image/jpeg;base64,/9j/4AAQSkZJRg...\"\n      }\n    ]\n  }\n}")
  .asString();

const options = {
  method: 'POST',
  headers: {
    'privy-app-id': '<privy-app-id>',
    Authorization: 'Basic <encoded-value>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    provider: 'bridge-sandbox',
    data: {
      type: 'individual',
      first_name: 'John',
      last_name: 'Doe',
      email: '[email protected]',
      phone: '+59898222122',
      residential_address: {
        street_line_1: '1234 Lombard Street',
        street_line_2: 'Apt 2F',
        city: 'San Francisco',
        subdivision: 'CA',
        postal_code: '94109',
        country: 'USA'
      },
      signed_agreement_id: '123',
      birth_date: '1989-09-09',
      identifying_information: [
        {
          type: 'ssn',
          number: '111-11-1111',
          issuing_country: 'USA',
          image_front: 'data:image/jpeg;base64,/9j/4AAQSkZJRg...',
          image_back: 'data:image/jpeg;base64,/9j/4AAQSkZJRg...'
        }
      ]
    }
  })
};

fetch('https://api.privy.io/v1/users/{user_id}/fiat/kyc', 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.privy.io/v1/users/{user_id}/fiat/kyc",
  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([
    'provider' => 'bridge-sandbox',
    'data' => [
        'type' => 'individual',
        'first_name' => 'John',
        'last_name' => 'Doe',
        'email' => '[email protected]',
        'phone' => '+59898222122',
        'residential_address' => [
                'street_line_1' => '1234 Lombard Street',
                'street_line_2' => 'Apt 2F',
                'city' => 'San Francisco',
                'subdivision' => 'CA',
                'postal_code' => '94109',
                'country' => 'USA'
        ],
        'signed_agreement_id' => '123',
        'birth_date' => '1989-09-09',
        'identifying_information' => [
                [
                                'type' => 'ssn',
                                'number' => '111-11-1111',
                                'issuing_country' => 'USA',
                                'image_front' => 'data:image/jpeg;base64,/9j/4AAQSkZJRg...',
                                'image_back' => 'data:image/jpeg;base64,/9j/4AAQSkZJRg...'
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic <encoded-value>",
    "Content-Type: application/json",
    "privy-app-id: <privy-app-id>"
  ],
]);

$response = curl_exec($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.privy.io/v1/users/{user_id}/fiat/kyc"

	payload := strings.NewReader("{\n  \"provider\": \"bridge-sandbox\",\n  \"data\": {\n    \"type\": \"individual\",\n    \"first_name\": \"John\",\n    \"last_name\": \"Doe\",\n    \"email\": \"[email protected]\",\n    \"phone\": \"+59898222122\",\n    \"residential_address\": {\n      \"street_line_1\": \"1234 Lombard Street\",\n      \"street_line_2\": \"Apt 2F\",\n      \"city\": \"San Francisco\",\n      \"subdivision\": \"CA\",\n      \"postal_code\": \"94109\",\n      \"country\": \"USA\"\n    },\n    \"signed_agreement_id\": \"123\",\n    \"birth_date\": \"1989-09-09\",\n    \"identifying_information\": [\n      {\n        \"type\": \"ssn\",\n        \"number\": \"111-11-1111\",\n        \"issuing_country\": \"USA\",\n        \"image_front\": \"data:image/jpeg;base64,/9j/4AAQSkZJRg...\",\n        \"image_back\": \"data:image/jpeg;base64,/9j/4AAQSkZJRg...\"\n      }\n    ]\n  }\n}")

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

	req.Header.Add("privy-app-id", "<privy-app-id>")
	req.Header.Add("Authorization", "Basic <encoded-value>")
	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))

}

{
  "user_id": "cmaftdj280001ww1ihwhy57s3",
  "provider_user_id": "303912cc-74fa-4f7a-9c51-2945b40ac09a",
  "status": "under_review"
}