curl --request PUT \
  --url https://api.hubapi.com/crm-associations/v1/associations/create-batch \
  --header 'Content-Type: application/json' \
  --data '
[
  {
    "fromObjectId": "<string>",
    "toObjectId": "<string>",
    "category": "<string>",
    "definitionId": "<string>"
  }
]
'

import requests

url = "https://api.hubapi.com/crm-associations/v1/associations/create-batch"

payload = [
    {
        "fromObjectId": "<string>",
        "toObjectId": "<string>",
        "category": "<string>",
        "definitionId": "<string>"
    }
]
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'PUT',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify([
    {
      fromObjectId: '<string>',
      toObjectId: '<string>',
      category: '<string>',
      definitionId: '<string>'
    }
  ])
};

fetch('https://api.hubapi.com/crm-associations/v1/associations/create-batch', 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.hubapi.com/crm-associations/v1/associations/create-batch",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    [
        'fromObjectId' => '<string>',
        'toObjectId' => '<string>',
        'category' => '<string>',
        'definitionId' => '<string>'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "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.hubapi.com/crm-associations/v1/associations/create-batch"

	payload := strings.NewReader("[\n  {\n    \"fromObjectId\": \"<string>\",\n    \"toObjectId\": \"<string>\",\n    \"category\": \"<string>\",\n    \"definitionId\": \"<string>\"\n  }\n]")

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

	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.put("https://api.hubapi.com/crm-associations/v1/associations/create-batch")
  .header("Content-Type", "application/json")
  .body("[\n  {\n    \"fromObjectId\": \"<string>\",\n    \"toObjectId\": \"<string>\",\n    \"category\": \"<string>\",\n    \"definitionId\": \"<string>\"\n  }\n]")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.hubapi.com/crm-associations/v1/associations/create-batch")

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

request = Net::HTTP::Put.new(url)
request["Content-Type"] = 'application/json'
request.body = "[\n  {\n    \"fromObjectId\": \"<string>\",\n    \"toObjectId\": \"<string>\",\n    \"category\": \"<string>\",\n    \"definitionId\": \"<string>\"\n  }\n]"

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

[
  {
    "fromObjectId": 496346,
    "toObjectId": 176602,
    "category": "HUBSPOT_DEFINED",
    "definitionId": 15
  },
  {
    "fromObjectId": 491646,
    "toObjectId": 176602,
    "category": "HUBSPOT_DEFINED",
    "definitionId": 15
  }
]