SignUpMembership

curl --request POST \
  --url https://your-instance.iw-erp.de/api/event/base_event_signup/membership/assign \
  --header 'content-type: application/json' \
  --header 'x-iw-jwt-token: <TOKEN>' \
  --data '
{
  "data": {
    "signUpIds": [
      1
    ],
    "productForMembers": "string",
    "productForNonMembers": "string",
    "contentType": "string",
    "startDate": "2026-10-15T09:30:00+02:00",
    "endDate": "2026-10-15T09:30:00+02:00"
  }
}
'

const options = {
  method: 'POST',
  headers: {'x-iw-jwt-token': '<TOKEN>', 'content-type': 'application/json'},
  body: JSON.stringify({
    data: {
      signUpIds: [1],
      productForMembers: 'string',
      productForNonMembers: 'string',
      contentType: 'string',
      startDate: '2026-10-15T09:30:00+02:00',
      endDate: '2026-10-15T09:30:00+02:00'
    }
  })
};

fetch('https://your-instance.iw-erp.de/api/event/base_event_signup/membership/assign', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://your-instance.iw-erp.de/api/event/base_event_signup/membership/assign"

payload = { "data": {
    "signUpIds": [1],
    "productForMembers": "string",
    "productForNonMembers": "string",
    "contentType": "string",
    "startDate": "2026-10-15T09:30:00+02:00",
    "endDate": "2026-10-15T09:30:00+02:00"
  } }
headers = {
  "x-iw-jwt-token": "<TOKEN>",
  "content-type": "application/json"
}

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

print(response.text)

<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://your-instance.iw-erp.de/api/event/base_event_signup/membership/assign', [
  'body' => '{"data":{"signUpIds":[1],"productForMembers":"string","productForNonMembers":"string","contentType":"string","startDate":"2026-10-15T09:30:00+02:00","endDate":"2026-10-15T09:30:00+02:00"}}',
  'headers' => [
    'content-type' => 'application/json',
    'x-iw-jwt-token' => '<TOKEN>',
  ],
]);

echo $response->getBody();

using System.Net.Http.Headers;
var client = new HttpClient();
var request = new HttpRequestMessage
{
  Method = HttpMethod.Post,
  RequestUri = new Uri("https://your-instance.iw-erp.de/api/event/base_event_signup/membership/assign"),
  Headers =
  {
    { "x-iw-jwt-token", "<TOKEN>" },
  },
  Content = new StringContent("{\"data\":{\"signUpIds\":[1],\"productForMembers\":\"string\",\"productForNonMembers\":\"string\",\"contentType\":\"string\",\"startDate\":\"2026-10-15T09:30:00+02:00\",\"endDate\":\"2026-10-15T09:30:00+02:00\"}}")
  {
    Headers =
    {
      ContentType = new MediaTypeHeaderValue("application/json")
    }
  }
};
using (var response = await client.SendAsync(request))
{
  response.EnsureSuccessStatusCode();
  var body = await response.Content.ReadAsStringAsync();
  Console.WriteLine(body);
}

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/json");
RequestBody body = RequestBody.create(mediaType, "{\"data\":{\"signUpIds\":[1],\"productForMembers\":\"string\",\"productForNonMembers\":\"string\",\"contentType\":\"string\",\"startDate\":\"2026-10-15T09:30:00+02:00\",\"endDate\":\"2026-10-15T09:30:00+02:00\"}}");
Request request = new Request.Builder()
  .url("https://your-instance.iw-erp.de/api/event/base_event_signup/membership/assign")
  .post(body)
  .addHeader("x-iw-jwt-token", "<TOKEN>")
  .addHeader("content-type", "application/json")
  .build();

Response response = client.newCall(request).execute();

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://your-instance.iw-erp.de/api/event/base_event_signup/membership/assign"

	payload := strings.NewReader("{\"data\":{\"signUpIds\":[1],\"productForMembers\":\"string\",\"productForNonMembers\":\"string\",\"contentType\":\"string\",\"startDate\":\"2026-10-15T09:30:00+02:00\",\"endDate\":\"2026-10-15T09:30:00+02:00\"}}")

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

	req.Header.Add("x-iw-jwt-token", "<TOKEN>")
	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))

}

Dart with the iw_erp_api package

import 'package:iw_erp_api/clients/event_base_event_sign_up_membership_controller.dart';
import 'package:iw_erp_api/logic/iw_api_state.dart';

IwApiState().host = 'your-instance.iw-erp.de';
IwApiState().currentJwtApiToken = '<TOKEN>';

final result = await EventBaseEventSignUpMembershipController.assign(signUpIds: [42], productForMembersId: 42, startDate: DateTime.fromJson({
  "signUpIds": [
    1
  ],
  "productForMembers": "string",
  "productForNonMembers": "string",
  "contentType": "string",
  "startDate": "2026-10-15T09:30:00+02:00",
  "endDate": "2026-10-15T09:30:00+02:00"
}));
if (result.success) {
  print(result.data);
}