using RestSharp;


var options = new RestClientOptions("http://localhost:56350/api/v1/Agents/UserDefinedFieldInfo/FigureOutListIdFromListTableIdAndUDListDefinitionId");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddJsonBody("{\n  \"Info\": {\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}", false);
var response = await client.PostAsync(request);

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

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    Info: {
      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/FigureOutListIdFromListTableIdAndUDListDefinitionId', 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/FigureOutListIdFromListTableIdAndUDListDefinitionId",
  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([
    'Info' => [
        '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/FigureOutListIdFromListTableIdAndUDListDefinitionId"

payload = { "Info": {
        "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({
    Info: {
      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/FigureOutListIdFromListTableIdAndUDListDefinitionId', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

123