using RestSharp;


var options = new RestClientOptions("http://localhost:56350/api/v1/ChatTopic/{chatTopicId}/UserAgent/{username}");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddJsonBody("{\n  \"TopicId\": 123,\n  \"User\": {\n    \"AssociateId\": 123,\n    \"Name\": \"<string>\",\n    \"PersonId\": 123,\n    \"Rank\": 123,\n    \"Tooltip\": \"<string>\",\n    \"GroupIdx\": 123,\n    \"FullName\": \"<string>\",\n    \"FormalName\": \"<string>\",\n    \"Deleted\": true,\n    \"EjUserId\": 123,\n    \"UserName\": \"<string>\",\n    \"ExtraFields\": {},\n    \"CustomFields\": {},\n    \"TableRight\": {\n      \"Mask\": \"<string>\",\n      \"Reason\": \"<string>\"\n    },\n    \"FieldProperties\": {}\n  },\n  \"CanListen\": true,\n  \"CanRespond\": true,\n  \"CanManage\": true,\n  \"CanNotify\": true\n}", false);
var response = await client.PutAsync(request);

Console.WriteLine("{0}", response.Content);

const options = {
  method: 'PUT',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    TopicId: 123,
    User: {
      AssociateId: 123,
      Name: '<string>',
      PersonId: 123,
      Rank: 123,
      Tooltip: '<string>',
      GroupIdx: 123,
      FullName: '<string>',
      FormalName: '<string>',
      Deleted: true,
      EjUserId: 123,
      UserName: '<string>',
      ExtraFields: {},
      CustomFields: {},
      TableRight: {Mask: '<string>', Reason: '<string>'},
      FieldProperties: {}
    },
    CanListen: true,
    CanRespond: true,
    CanManage: true,
    CanNotify: true
  })
};

fetch('http://localhost:56350/api/v1/ChatTopic/{chatTopicId}/UserAgent/{username}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_PORT => "56350",
  CURLOPT_URL => "http://localhost:56350/api/v1/ChatTopic/{chatTopicId}/UserAgent/{username}",
  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([
    'TopicId' => 123,
    'User' => [
        'AssociateId' => 123,
        'Name' => '<string>',
        'PersonId' => 123,
        'Rank' => 123,
        'Tooltip' => '<string>',
        'GroupIdx' => 123,
        'FullName' => '<string>',
        'FormalName' => '<string>',
        'Deleted' => true,
        'EjUserId' => 123,
        'UserName' => '<string>',
        'ExtraFields' => [
                
        ],
        'CustomFields' => [
                
        ],
        'TableRight' => [
                'Mask' => '<string>',
                'Reason' => '<string>'
        ],
        'FieldProperties' => [
                
        ]
    ],
    'CanListen' => true,
    'CanRespond' => true,
    'CanManage' => true,
    'CanNotify' => true
  ]),
  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;
}

import requests

url = "http://localhost:56350/api/v1/ChatTopic/{chatTopicId}/UserAgent/{username}"

payload = {
    "TopicId": 123,
    "User": {
        "AssociateId": 123,
        "Name": "<string>",
        "PersonId": 123,
        "Rank": 123,
        "Tooltip": "<string>",
        "GroupIdx": 123,
        "FullName": "<string>",
        "FormalName": "<string>",
        "Deleted": True,
        "EjUserId": 123,
        "UserName": "<string>",
        "ExtraFields": {},
        "CustomFields": {},
        "TableRight": {
            "Mask": "<string>",
            "Reason": "<string>"
        },
        "FieldProperties": {}
    },
    "CanListen": True,
    "CanRespond": True,
    "CanManage": True,
    "CanNotify": True
}
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({
    TopicId: 123,
    User: {
      AssociateId: 123,
      Name: '<string>',
      PersonId: 123,
      Rank: 123,
      Tooltip: '<string>',
      GroupIdx: 123,
      FullName: '<string>',
      FormalName: '<string>',
      Deleted: true,
      EjUserId: 123,
      UserName: '<string>',
      ExtraFields: {},
      CustomFields: {},
      TableRight: {Mask: '<string>', Reason: '<string>'},
      FieldProperties: {}
    },
    CanListen: true,
    CanRespond: true,
    CanManage: true,
    CanNotify: true
  })
};

fetch('http://localhost:56350/api/v1/ChatTopic/{chatTopicId}/UserAgent/{username}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "TopicId": 123,
  "User": {
    "AssociateId": 123,
    "Name": "<string>",
    "PersonId": 123,
    "Rank": 123,
    "Tooltip": "<string>",
    "Type": "Unknown",
    "GroupIdx": 123,
    "FullName": "<string>",
    "FormalName": "<string>",
    "Deleted": true,
    "EjUserId": 123,
    "UserName": "<string>",
    "ExtraFields": {},
    "CustomFields": {},
    "TableRight": {
      "Mask": "<string>",
      "Reason": "<string>"
    },
    "FieldProperties": {}
  },
  "CanListen": true,
  "CanRespond": true,
  "CanManage": true,
  "CanNotify": true
}