curl --request PATCH \
  --url https://app.launchdarkly.com/api/v2/flags/{projectKey}/{featureFlagKey}/expiring-user-targets/{environmentKey} \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "instructions": [
    {
      "kind": "addExpireUserTargetDate",
      "userKey": "sandy",
      "value": 1686412800000,
      "variationId": "ce12d345-a1b2-4fb5-a123-ab123d4d5f5d"
    }
  ],
  "comment": "optional comment"
}
'

import requests

url = "https://app.launchdarkly.com/api/v2/flags/{projectKey}/{featureFlagKey}/expiring-user-targets/{environmentKey}"

payload = {
    "instructions": [
        {
            "kind": "addExpireUserTargetDate",
            "userKey": "sandy",
            "value": 1686412800000,
            "variationId": "ce12d345-a1b2-4fb5-a123-ab123d4d5f5d"
        }
    ],
    "comment": "optional comment"
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PATCH',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    instructions: [
      {
        kind: 'addExpireUserTargetDate',
        userKey: 'sandy',
        value: 1686412800000,
        variationId: 'ce12d345-a1b2-4fb5-a123-ab123d4d5f5d'
      }
    ],
    comment: 'optional comment'
  })
};

fetch('https://app.launchdarkly.com/api/v2/flags/{projectKey}/{featureFlagKey}/expiring-user-targets/{environmentKey}', 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://app.launchdarkly.com/api/v2/flags/{projectKey}/{featureFlagKey}/expiring-user-targets/{environmentKey}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'instructions' => [
        [
                'kind' => 'addExpireUserTargetDate',
                'userKey' => 'sandy',
                'value' => 1686412800000,
                'variationId' => 'ce12d345-a1b2-4fb5-a123-ab123d4d5f5d'
        ]
    ],
    'comment' => 'optional comment'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "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://app.launchdarkly.com/api/v2/flags/{projectKey}/{featureFlagKey}/expiring-user-targets/{environmentKey}"

	payload := strings.NewReader("{\n  \"instructions\": [\n    {\n      \"kind\": \"addExpireUserTargetDate\",\n      \"userKey\": \"sandy\",\n      \"value\": 1686412800000,\n      \"variationId\": \"ce12d345-a1b2-4fb5-a123-ab123d4d5f5d\"\n    }\n  ],\n  \"comment\": \"optional comment\"\n}")

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

	req.Header.Add("Authorization", "<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.patch("https://app.launchdarkly.com/api/v2/flags/{projectKey}/{featureFlagKey}/expiring-user-targets/{environmentKey}")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"instructions\": [\n    {\n      \"kind\": \"addExpireUserTargetDate\",\n      \"userKey\": \"sandy\",\n      \"value\": 1686412800000,\n      \"variationId\": \"ce12d345-a1b2-4fb5-a123-ab123d4d5f5d\"\n    }\n  ],\n  \"comment\": \"optional comment\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://app.launchdarkly.com/api/v2/flags/{projectKey}/{featureFlagKey}/expiring-user-targets/{environmentKey}")

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

request = Net::HTTP::Patch.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"instructions\": [\n    {\n      \"kind\": \"addExpireUserTargetDate\",\n      \"userKey\": \"sandy\",\n      \"value\": 1686412800000,\n      \"variationId\": \"ce12d345-a1b2-4fb5-a123-ab123d4d5f5d\"\n    }\n  ],\n  \"comment\": \"optional comment\"\n}"

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

{
  "items": [
    {
      "_id": "12ab3c45de678910fgh12345",
      "_version": 1,
      "expirationDate": "1658192820000",
      "userKey": "example-user-key",
      "_resourceId": {
        "kind": "<string>",
        "projectKey": "<string>",
        "environmentKey": "<string>",
        "flagKey": "<string>",
        "key": "<string>"
      },
      "targetType": "included",
      "variationId": "ce67d625-a8b9-4fb5-a344-ab909d9d4f4d"
    }
  ],
  "_links": {},
  "totalInstructions": 1,
  "successfulInstructions": 1,
  "failedInstructions": 0,
  "errors": [
    {
      "instructionIndex": 1,
      "message": "example error message"
    }
  ]
}

{
  "code": "invalid_request",
  "message": "Invalid request body"
}

{
  "code": "unauthorized",
  "message": "Invalid access token"
}

{
  "code": "forbidden",
  "message": "Forbidden. Access to the requested resource was denied."
}

{
  "code": "not_found",
  "message": "Invalid resource identifier"
}

{
  "code": "rate_limited",
  "message": "You've exceeded the API rate limit. Try again later."
}