using RestSharp;


var options = new RestClientOptions("http://localhost:56350/api/v1/Agents/UserDefinedFieldInfo/SaveUserDefinedFieldInfos");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddJsonBody("{\n  \"Infos\": [\n    {\n      \"UDefFieldId\": 123,\n      \"ColumnId\": 123,\n      \"FieldDefault\": \"<string>\",\n      \"FieldHeight\": 123,\n      \"FieldLabel\": \"<string>\",\n      \"FieldLeft\": 123,\n      \"FieldTop\": 123,\n      \"FieldWidth\": 123,\n      \"FormatMask\": \"<string>\",\n      \"HideLabel\": true,\n      \"IsIndexed\": true,\n      \"LabelHeight\": 123,\n      \"LabelLeft\": 123,\n      \"LabelTop\": 123,\n      \"LabelWidth\": 123,\n      \"LastVersionId\": 123,\n      \"ListTableId\": 123,\n      \"IsMandatory\": true,\n      \"Page1LineNo\": 123,\n      \"ProgId\": \"<string>\",\n      \"IsReadOnly\": true,\n      \"ShortLabel\": \"<string>\",\n      \"TabOrder\": 123,\n      \"TextLength\": 123,\n      \"Tooltip\": \"<string>\",\n      \"UdefIdentity\": 123,\n      \"UDListDefinitionId\": 123,\n      \"Version\": 123,\n      \"TemplateVariableName\": \"<string>\",\n      \"HasBeenPublished\": true,\n      \"MdoListName\": \"<string>\",\n      \"TableRight\": {\n        \"Mask\": \"<string>\",\n        \"Reason\": \"<string>\"\n      },\n      \"FieldProperties\": {}\n    }\n  ]\n}", false);
var response = await client.PostAsync(request);

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

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    Infos: [
      {
        UDefFieldId: 123,
        ColumnId: 123,
        FieldDefault: '<string>',
        FieldHeight: 123,
        FieldLabel: '<string>',
        FieldLeft: 123,
        FieldTop: 123,
        FieldWidth: 123,
        FormatMask: '<string>',
        HideLabel: true,
        IsIndexed: true,
        LabelHeight: 123,
        LabelLeft: 123,
        LabelTop: 123,
        LabelWidth: 123,
        LastVersionId: 123,
        ListTableId: 123,
        IsMandatory: true,
        Page1LineNo: 123,
        ProgId: '<string>',
        IsReadOnly: true,
        ShortLabel: '<string>',
        TabOrder: 123,
        TextLength: 123,
        Tooltip: '<string>',
        UdefIdentity: 123,
        UDListDefinitionId: 123,
        Version: 123,
        TemplateVariableName: '<string>',
        HasBeenPublished: true,
        MdoListName: '<string>',
        TableRight: {Mask: '<string>', Reason: '<string>'},
        FieldProperties: {}
      }
    ]
  })
};

fetch('http://localhost:56350/api/v1/Agents/UserDefinedFieldInfo/SaveUserDefinedFieldInfos', 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/Agents/UserDefinedFieldInfo/SaveUserDefinedFieldInfos",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'Infos' => [
        [
                'UDefFieldId' => 123,
                'ColumnId' => 123,
                'FieldDefault' => '<string>',
                'FieldHeight' => 123,
                'FieldLabel' => '<string>',
                'FieldLeft' => 123,
                'FieldTop' => 123,
                'FieldWidth' => 123,
                'FormatMask' => '<string>',
                'HideLabel' => true,
                'IsIndexed' => true,
                'LabelHeight' => 123,
                'LabelLeft' => 123,
                'LabelTop' => 123,
                'LabelWidth' => 123,
                'LastVersionId' => 123,
                'ListTableId' => 123,
                'IsMandatory' => true,
                'Page1LineNo' => 123,
                'ProgId' => '<string>',
                'IsReadOnly' => true,
                'ShortLabel' => '<string>',
                'TabOrder' => 123,
                'TextLength' => 123,
                'Tooltip' => '<string>',
                'UdefIdentity' => 123,
                'UDListDefinitionId' => 123,
                'Version' => 123,
                'TemplateVariableName' => '<string>',
                'HasBeenPublished' => true,
                'MdoListName' => '<string>',
                'TableRight' => [
                                'Mask' => '<string>',
                                'Reason' => '<string>'
                ],
                'FieldProperties' => [
                                
                ]
        ]
    ]
  ]),
  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/Agents/UserDefinedFieldInfo/SaveUserDefinedFieldInfos"

payload = { "Infos": [
        {
            "UDefFieldId": 123,
            "ColumnId": 123,
            "FieldDefault": "<string>",
            "FieldHeight": 123,
            "FieldLabel": "<string>",
            "FieldLeft": 123,
            "FieldTop": 123,
            "FieldWidth": 123,
            "FormatMask": "<string>",
            "HideLabel": True,
            "IsIndexed": True,
            "LabelHeight": 123,
            "LabelLeft": 123,
            "LabelTop": 123,
            "LabelWidth": 123,
            "LastVersionId": 123,
            "ListTableId": 123,
            "IsMandatory": True,
            "Page1LineNo": 123,
            "ProgId": "<string>",
            "IsReadOnly": True,
            "ShortLabel": "<string>",
            "TabOrder": 123,
            "TextLength": 123,
            "Tooltip": "<string>",
            "UdefIdentity": 123,
            "UDListDefinitionId": 123,
            "Version": 123,
            "TemplateVariableName": "<string>",
            "HasBeenPublished": True,
            "MdoListName": "<string>",
            "TableRight": {
                "Mask": "<string>",
                "Reason": "<string>"
            },
            "FieldProperties": {}
        }
    ] }
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    Infos: [
      {
        UDefFieldId: 123,
        ColumnId: 123,
        FieldDefault: '<string>',
        FieldHeight: 123,
        FieldLabel: '<string>',
        FieldLeft: 123,
        FieldTop: 123,
        FieldWidth: 123,
        FormatMask: '<string>',
        HideLabel: true,
        IsIndexed: true,
        LabelHeight: 123,
        LabelLeft: 123,
        LabelTop: 123,
        LabelWidth: 123,
        LastVersionId: 123,
        ListTableId: 123,
        IsMandatory: true,
        Page1LineNo: 123,
        ProgId: '<string>',
        IsReadOnly: true,
        ShortLabel: '<string>',
        TabOrder: 123,
        TextLength: 123,
        Tooltip: '<string>',
        UdefIdentity: 123,
        UDListDefinitionId: 123,
        Version: 123,
        TemplateVariableName: '<string>',
        HasBeenPublished: true,
        MdoListName: '<string>',
        TableRight: {Mask: '<string>', Reason: '<string>'},
        FieldProperties: {}
      }
    ]
  })
};

fetch('http://localhost:56350/api/v1/Agents/UserDefinedFieldInfo/SaveUserDefinedFieldInfos', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));