curl --request POST \
  --url https://api.beltic.com/v1/identity/documents/addresses/{id}/files \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '
{
  "data": {
    "type": "file",
    "attributes": {
      "filename": "<string>",
      "content_type": "<string>",
      "byte_size": 123,
      "checksum": "<string>"
    }
  }
}
'

import requests

url = "https://api.beltic.com/v1/identity/documents/addresses/{id}/files"

payload = { "data": {
        "type": "file",
        "attributes": {
            "filename": "<string>",
            "content_type": "<string>",
            "byte_size": 123,
            "checksum": "<string>"
        }
    } }
headers = {
    "X-Api-Key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-Api-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    data: {
      type: 'file',
      attributes: {
        filename: '<string>',
        content_type: '<string>',
        byte_size: 123,
        checksum: '<string>'
      }
    }
  })
};

fetch('https://api.beltic.com/v1/identity/documents/addresses/{id}/files', 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.beltic.com/v1/identity/documents/addresses/{id}/files",
  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([
    'data' => [
        'type' => 'file',
        'attributes' => [
                'filename' => '<string>',
                'content_type' => '<string>',
                'byte_size' => 123,
                'checksum' => '<string>'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-Api-Key: <api-key>"
  ],
]);

$response = curl_exec($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.beltic.com/v1/identity/documents/addresses/{id}/files"

	payload := strings.NewReader("{\n  \"data\": {\n    \"type\": \"file\",\n    \"attributes\": {\n      \"filename\": \"<string>\",\n      \"content_type\": \"<string>\",\n      \"byte_size\": 123,\n      \"checksum\": \"<string>\"\n    }\n  }\n}")

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

	req.Header.Add("X-Api-Key", "<api-key>")
	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.beltic.com/v1/identity/documents/addresses/{id}/files")
  .header("X-Api-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"data\": {\n    \"type\": \"file\",\n    \"attributes\": {\n      \"filename\": \"<string>\",\n      \"content_type\": \"<string>\",\n      \"byte_size\": 123,\n      \"checksum\": \"<string>\"\n    }\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.beltic.com/v1/identity/documents/addresses/{id}/files")

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

request = Net::HTTP::Post.new(url)
request["X-Api-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"data\": {\n    \"type\": \"file\",\n    \"attributes\": {\n      \"filename\": \"<string>\",\n      \"content_type\": \"<string>\",\n      \"byte_size\": 123,\n      \"checksum\": \"<string>\"\n    }\n  }\n}"

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

{
  "data": {
    "type": "file",
    "id": "123e4567-e89b-12d3-a456-426614174000",
    "attributes": {
      "id": "<string>",
      "filename": "<string>",
      "content_type": "<string>",
      "url": "https://s3.amazonaws.com/...?X-Amz-Signature=...",
      "byte_size": 123,
      "checksum": "<string>"
    }
  },
  "meta": {
    "presigned_upload_url": "https://s3.amazonaws.com/beltic-documents/...",
    "expires_in": 3600
  }
}

{
  "errors": [
    {
      "status": "<string>",
      "title": "<string>",
      "detail": "<string>",
      "id": "<string>",
      "code": "<string>",
      "source": {
        "pointer": "<string>",
        "parameter": "<string>",
        "header": "<string>"
      },
      "meta": {}
    }
  ],
  "meta": {}
}

{
  "errors": [
    {
      "status": "<string>",
      "title": "<string>",
      "detail": "<string>",
      "id": "<string>",
      "code": "<string>",
      "source": {
        "pointer": "<string>",
        "parameter": "<string>",
        "header": "<string>"
      },
      "meta": {}
    }
  ],
  "meta": {}
}

{
  "errors": [
    {
      "status": "<string>",
      "title": "<string>",
      "detail": "<string>",
      "id": "<string>",
      "code": "<string>",
      "source": {
        "pointer": "<string>",
        "parameter": "<string>",
        "header": "<string>"
      },
      "meta": {}
    }
  ],
  "meta": {}
}

{
  "errors": [
    {
      "status": "<string>",
      "title": "<string>",
      "detail": "<string>",
      "id": "<string>",
      "code": "<string>",
      "source": {
        "pointer": "<string>",
        "parameter": "<string>",
        "header": "<string>"
      },
      "meta": {}
    }
  ],
  "meta": {}
}