curl --request POST \
  --url https://api.mentionlab.io/api/entities/merge \
  --header 'Content-Type: application/json' \
  --header 'x-project-id: <x-project-id>' \
  --data '
{
  "targetId": "3f29c1a4-1b2c-4e7d-9a8b-0c1d2e3f4a5b",
  "sourceIds": [
    "a1b2c3d4-e5f6-4789-90ab-cdef12345678",
    "b2c3d4e5-f6a7-4890-81bc-def234567890"
  ]
}
'

import requests

url = "https://api.mentionlab.io/api/entities/merge"

payload = {
    "targetId": "3f29c1a4-1b2c-4e7d-9a8b-0c1d2e3f4a5b",
    "sourceIds": ["a1b2c3d4-e5f6-4789-90ab-cdef12345678", "b2c3d4e5-f6a7-4890-81bc-def234567890"]
}
headers = {
    "x-project-id": "<x-project-id>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-project-id': '<x-project-id>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    targetId: '3f29c1a4-1b2c-4e7d-9a8b-0c1d2e3f4a5b',
    sourceIds: ['a1b2c3d4-e5f6-4789-90ab-cdef12345678', 'b2c3d4e5-f6a7-4890-81bc-def234567890']
  })
};

fetch('https://api.mentionlab.io/api/entities/merge', 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.mentionlab.io/api/entities/merge",
  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([
    'targetId' => '3f29c1a4-1b2c-4e7d-9a8b-0c1d2e3f4a5b',
    'sourceIds' => [
        'a1b2c3d4-e5f6-4789-90ab-cdef12345678',
        'b2c3d4e5-f6a7-4890-81bc-def234567890'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-project-id: <x-project-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.mentionlab.io/api/entities/merge"

	payload := strings.NewReader("{\n  \"targetId\": \"3f29c1a4-1b2c-4e7d-9a8b-0c1d2e3f4a5b\",\n  \"sourceIds\": [\n    \"a1b2c3d4-e5f6-4789-90ab-cdef12345678\",\n    \"b2c3d4e5-f6a7-4890-81bc-def234567890\"\n  ]\n}")

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

	req.Header.Add("x-project-id", "<x-project-id>")
	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.mentionlab.io/api/entities/merge")
  .header("x-project-id", "<x-project-id>")
  .header("Content-Type", "application/json")
  .body("{\n  \"targetId\": \"3f29c1a4-1b2c-4e7d-9a8b-0c1d2e3f4a5b\",\n  \"sourceIds\": [\n    \"a1b2c3d4-e5f6-4789-90ab-cdef12345678\",\n    \"b2c3d4e5-f6a7-4890-81bc-def234567890\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.mentionlab.io/api/entities/merge")

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

request = Net::HTTP::Post.new(url)
request["x-project-id"] = '<x-project-id>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"targetId\": \"3f29c1a4-1b2c-4e7d-9a8b-0c1d2e3f4a5b\",\n  \"sourceIds\": [\n    \"a1b2c3d4-e5f6-4789-90ab-cdef12345678\",\n    \"b2c3d4e5-f6a7-4890-81bc-def234567890\"\n  ]\n}"

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

{
  "statusCode": 400,
  "message": "Validation failed",
  "error": "Bad Request"
}

{
  "statusCode": 400,
  "message": "Validation failed",
  "error": "Bad Request"
}

{
  "statusCode": 400,
  "message": "Validation failed",
  "error": "Bad Request"
}