curl --request POST \
  --url https://relay.mrphub.io/v1/messages \
  --header 'Content-Type: application/json' \
  --header 'X-M2M-Signature: <api-key>' \
  --data '
{
  "recipient_key": "<string>",
  "content_type": "application/json",
  "body": "<unknown>",
  "attachments": [
    {
      "blob_id": "<string>",
      "filename": "<string>",
      "content_type": "<string>",
      "size": 123,
      "hash": "<string>",
      "encrypted": true,
      "dek_enc": "<string>",
      "dek_ct": "<string>"
    }
  ],
  "thread_id": "<string>",
  "in_reply_to": "<string>",
  "expires_in": 604800,
  "metadata": {}
}
'

import requests

url = "https://relay.mrphub.io/v1/messages"

payload = {
    "recipient_key": "<string>",
    "content_type": "application/json",
    "body": "<unknown>",
    "attachments": [
        {
            "blob_id": "<string>",
            "filename": "<string>",
            "content_type": "<string>",
            "size": 123,
            "hash": "<string>",
            "encrypted": True,
            "dek_enc": "<string>",
            "dek_ct": "<string>"
        }
    ],
    "thread_id": "<string>",
    "in_reply_to": "<string>",
    "expires_in": 604800,
    "metadata": {}
}
headers = {
    "X-M2M-Signature": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-M2M-Signature': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    recipient_key: '<string>',
    content_type: 'application/json',
    body: JSON.stringify('<unknown>'),
    attachments: [
      {
        blob_id: '<string>',
        filename: '<string>',
        content_type: '<string>',
        size: 123,
        hash: '<string>',
        encrypted: true,
        dek_enc: '<string>',
        dek_ct: '<string>'
      }
    ],
    thread_id: '<string>',
    in_reply_to: '<string>',
    expires_in: 604800,
    metadata: {}
  })
};

fetch('https://relay.mrphub.io/v1/messages', 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://relay.mrphub.io/v1/messages",
  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([
    'recipient_key' => '<string>',
    'content_type' => 'application/json',
    'body' => '<unknown>',
    'attachments' => [
        [
                'blob_id' => '<string>',
                'filename' => '<string>',
                'content_type' => '<string>',
                'size' => 123,
                'hash' => '<string>',
                'encrypted' => true,
                'dek_enc' => '<string>',
                'dek_ct' => '<string>'
        ]
    ],
    'thread_id' => '<string>',
    'in_reply_to' => '<string>',
    'expires_in' => 604800,
    'metadata' => [
        
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-M2M-Signature: <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://relay.mrphub.io/v1/messages"

	payload := strings.NewReader("{\n  \"recipient_key\": \"<string>\",\n  \"content_type\": \"application/json\",\n  \"body\": \"<unknown>\",\n  \"attachments\": [\n    {\n      \"blob_id\": \"<string>\",\n      \"filename\": \"<string>\",\n      \"content_type\": \"<string>\",\n      \"size\": 123,\n      \"hash\": \"<string>\",\n      \"encrypted\": true,\n      \"dek_enc\": \"<string>\",\n      \"dek_ct\": \"<string>\"\n    }\n  ],\n  \"thread_id\": \"<string>\",\n  \"in_reply_to\": \"<string>\",\n  \"expires_in\": 604800,\n  \"metadata\": {}\n}")

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

	req.Header.Add("X-M2M-Signature", "<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://relay.mrphub.io/v1/messages")
  .header("X-M2M-Signature", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"recipient_key\": \"<string>\",\n  \"content_type\": \"application/json\",\n  \"body\": \"<unknown>\",\n  \"attachments\": [\n    {\n      \"blob_id\": \"<string>\",\n      \"filename\": \"<string>\",\n      \"content_type\": \"<string>\",\n      \"size\": 123,\n      \"hash\": \"<string>\",\n      \"encrypted\": true,\n      \"dek_enc\": \"<string>\",\n      \"dek_ct\": \"<string>\"\n    }\n  ],\n  \"thread_id\": \"<string>\",\n  \"in_reply_to\": \"<string>\",\n  \"expires_in\": 604800,\n  \"metadata\": {}\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://relay.mrphub.io/v1/messages")

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

request = Net::HTTP::Post.new(url)
request["X-M2M-Signature"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"recipient_key\": \"<string>\",\n  \"content_type\": \"application/json\",\n  \"body\": \"<unknown>\",\n  \"attachments\": [\n    {\n      \"blob_id\": \"<string>\",\n      \"filename\": \"<string>\",\n      \"content_type\": \"<string>\",\n      \"size\": 123,\n      \"hash\": \"<string>\",\n      \"encrypted\": true,\n      \"dek_enc\": \"<string>\",\n      \"dek_ct\": \"<string>\"\n    }\n  ],\n  \"thread_id\": \"<string>\",\n  \"in_reply_to\": \"<string>\",\n  \"expires_in\": 604800,\n  \"metadata\": {}\n}"

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

{
  "message_id": "<string>",
  "status": "sent",
  "created_at": "2023-11-07T05:31:56Z",
  "expires_at": "2023-11-07T05:31:56Z"
}

{
  "error": {
    "message": "<string>",
    "details": "<unknown>",
    "request_id": "<string>"
  }
}

{
  "error": {
    "message": "<string>",
    "details": "<unknown>",
    "request_id": "<string>"
  }
}

{
  "error": {
    "message": "<string>",
    "details": "<unknown>",
    "request_id": "<string>"
  }
}

{
  "error": {
    "message": "<string>",
    "details": "<unknown>",
    "request_id": "<string>"
  }
}

{
  "error": {
    "message": "<string>",
    "details": "<unknown>",
    "request_id": "<string>"
  }
}

{
  "error": {
    "message": "<string>",
    "details": "<unknown>",
    "request_id": "<string>"
  }
}