curl --request PUT \
  --url https://int-data.moneydesktop.com/members/{member_guid}/resume \
  --header 'Content-Type: application/vnd.mx.nexus.v1+json' \
  --header 'MD-SESSION-TOKEN: <api-key>' \
  --data '
[
  {
    "challenges": [
      {
        "guid": "institution-credential-guid",
        "value": "user-entered-value"
      }
    ]
  }
]
'

import requests

url = "https://int-data.moneydesktop.com/members/{member_guid}/resume"

payload = [{ "challenges": [
            {
                "guid": "institution-credential-guid",
                "value": "user-entered-value"
            }
        ] }]
headers = {
    "MD-SESSION-TOKEN": "<api-key>",
    "Content-Type": "application/vnd.mx.nexus.v1+json"
}

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

print(response.text)

const options = {
  method: 'PUT',
  headers: {
    'MD-SESSION-TOKEN': '<api-key>',
    'Content-Type': 'application/vnd.mx.nexus.v1+json'
  },
  body: JSON.stringify([
    {
      challenges: [{guid: 'institution-credential-guid', value: 'user-entered-value'}]
    }
  ])
};

fetch('https://int-data.moneydesktop.com/members/{member_guid}/resume', 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://int-data.moneydesktop.com/members/{member_guid}/resume",
  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([
    [
        'challenges' => [
                [
                                'guid' => 'institution-credential-guid',
                                'value' => 'user-entered-value'
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/vnd.mx.nexus.v1+json",
    "MD-SESSION-TOKEN: <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://int-data.moneydesktop.com/members/{member_guid}/resume"

	payload := strings.NewReader("[\n  {\n    \"challenges\": [\n      {\n        \"guid\": \"institution-credential-guid\",\n        \"value\": \"user-entered-value\"\n      }\n    ]\n  }\n]")

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

	req.Header.Add("MD-SESSION-TOKEN", "<api-key>")
	req.Header.Add("Content-Type", "application/vnd.mx.nexus.v1+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://int-data.moneydesktop.com/members/{member_guid}/resume")
  .header("MD-SESSION-TOKEN", "<api-key>")
  .header("Content-Type", "application/vnd.mx.nexus.v1+json")
  .body("[\n  {\n    \"challenges\": [\n      {\n        \"guid\": \"institution-credential-guid\",\n        \"value\": \"user-entered-value\"\n      }\n    ]\n  }\n]")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://int-data.moneydesktop.com/members/{member_guid}/resume")

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

request = Net::HTTP::Put.new(url)
request["MD-SESSION-TOKEN"] = '<api-key>'
request["Content-Type"] = 'application/vnd.mx.nexus.v1+json'
request.body = "[\n  {\n    \"challenges\": [\n      {\n        \"guid\": \"institution-credential-guid\",\n        \"value\": \"user-entered-value\"\n      }\n    ]\n  }\n]"

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

{
  "members": [
    {
      "aggregated_at": "2016-10-13T18:07:57.000Z",
      "background_aggregation_is_disabled": false,
      "connection_status": "CONNECTED",
      "external_guid": null,
      "guid": "MBR-7c6f361b-e582-15b6-60c0-358f12466b4b",
      "institution_code": "chase",
      "institution_guid": "INS-1572a04c-912b-59bf-5841-332c7dfafaef",
      "is_being_aggregated": false,
      "is_managed_by_user": false,
      "is_oauth": false,
      "is_user_created": true,
      "most_recent_job_guid": "JOB-d6bb804b-6d12-44f1-b0ad-403441c03372",
      "metadata": "\\\"credentials_last_refreshed_at\\\": \\\"2015-10-15\\\"",
      "name": "Chase Bank",
      "successfully_aggregated_at": "2016-10-13T17:57:38.000Z",
      "use_cases": [
        "PFM"
      ],
      "user_guid": "USR-fa7537f3-48aa-a683-a02a-b18940482f54"
    }
  ]
}