curl --request POST \
  --url https://{cluster}.cognitedata.com/api/v1/projects/{project}/3d/contextualization/cad \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "items": [
    {
      "asset": {
        "instanceId": {
          "space": "<string>",
          "externalId": "<string>"
        }
      },
      "nodeId": 1003
    }
  ],
  "dmsContextualizationConfig": {
    "object3DSpace": "<string>",
    "contextualizationSpace": "<string>",
    "revision": {
      "instanceId": {
        "space": "<string>",
        "externalId": "<string>"
      }
    }
  }
}
'

import requests

url = "https://{cluster}.cognitedata.com/api/v1/projects/{project}/3d/contextualization/cad"

payload = {
    "items": [
        {
            "asset": { "instanceId": {
                    "space": "<string>",
                    "externalId": "<string>"
                } },
            "nodeId": 1003
        }
    ],
    "dmsContextualizationConfig": {
        "object3DSpace": "<string>",
        "contextualizationSpace": "<string>",
        "revision": { "instanceId": {
                "space": "<string>",
                "externalId": "<string>"
            } }
    }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    items: [
      {asset: {instanceId: {space: '<string>', externalId: '<string>'}}, nodeId: 1003}
    ],
    dmsContextualizationConfig: {
      object3DSpace: '<string>',
      contextualizationSpace: '<string>',
      revision: {instanceId: {space: '<string>', externalId: '<string>'}}
    }
  })
};

fetch('https://{cluster}.cognitedata.com/api/v1/projects/{project}/3d/contextualization/cad', 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://{cluster}.cognitedata.com/api/v1/projects/{project}/3d/contextualization/cad",
  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([
    'items' => [
        [
                'asset' => [
                                'instanceId' => [
                                                                'space' => '<string>',
                                                                'externalId' => '<string>'
                                ]
                ],
                'nodeId' => 1003
        ]
    ],
    'dmsContextualizationConfig' => [
        'object3DSpace' => '<string>',
        'contextualizationSpace' => '<string>',
        'revision' => [
                'instanceId' => [
                                'space' => '<string>',
                                'externalId' => '<string>'
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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://{cluster}.cognitedata.com/api/v1/projects/{project}/3d/contextualization/cad"

	payload := strings.NewReader("{\n  \"items\": [\n    {\n      \"asset\": {\n        \"instanceId\": {\n          \"space\": \"<string>\",\n          \"externalId\": \"<string>\"\n        }\n      },\n      \"nodeId\": 1003\n    }\n  ],\n  \"dmsContextualizationConfig\": {\n    \"object3DSpace\": \"<string>\",\n    \"contextualizationSpace\": \"<string>\",\n    \"revision\": {\n      \"instanceId\": {\n        \"space\": \"<string>\",\n        \"externalId\": \"<string>\"\n      }\n    }\n  }\n}")

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

	req.Header.Add("Authorization", "Bearer <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))

}

HttpResponse<String> response = Unirest.post("https://{cluster}.cognitedata.com/api/v1/projects/{project}/3d/contextualization/cad")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"items\": [\n    {\n      \"asset\": {\n        \"instanceId\": {\n          \"space\": \"<string>\",\n          \"externalId\": \"<string>\"\n        }\n      },\n      \"nodeId\": 1003\n    }\n  ],\n  \"dmsContextualizationConfig\": {\n    \"object3DSpace\": \"<string>\",\n    \"contextualizationSpace\": \"<string>\",\n    \"revision\": {\n      \"instanceId\": {\n        \"space\": \"<string>\",\n        \"externalId\": \"<string>\"\n      }\n    }\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{cluster}.cognitedata.com/api/v1/projects/{project}/3d/contextualization/cad")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"items\": [\n    {\n      \"asset\": {\n        \"instanceId\": {\n          \"space\": \"<string>\",\n          \"externalId\": \"<string>\"\n        }\n      },\n      \"nodeId\": 1003\n    }\n  ],\n  \"dmsContextualizationConfig\": {\n    \"object3DSpace\": \"<string>\",\n    \"contextualizationSpace\": \"<string>\",\n    \"revision\": {\n      \"instanceId\": {\n        \"space\": \"<string>\",\n        \"externalId\": \"<string>\"\n      }\n    }\n  }\n}"

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

{}

{
  "error": {
    "code": 401,
    "message": "Could not authenticate.",
    "missing": [
      {}
    ],
    "duplicated": [
      {}
    ]
  }
}