curl --request POST \
  --url https://api.ctrl-hub.com/v3/users/{user_id}/seat-class-changes \
  --header 'Content-Type: application/vnd.api+json' \
  --header 'X-Session-Token: <api-key>' \
  --data '
{
  "data": {
    "type": "seat-class-changes",
    "attributes": {
      "seat_class": "field",
      "email": "pat.jones@example.com"
    },
    "relationships": {
      "organisation": {
        "data": {
          "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
          "type": "organisations"
        }
      }
    }
  }
}
'

import requests

url = "https://api.ctrl-hub.com/v3/users/{user_id}/seat-class-changes"

payload = { "data": {
        "type": "seat-class-changes",
        "attributes": {
            "seat_class": "field",
            "email": "pat.jones@example.com"
        },
        "relationships": { "organisation": { "data": {
                    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
                    "type": "organisations"
                } } }
    } }
headers = {
    "X-Session-Token": "<api-key>",
    "Content-Type": "application/vnd.api+json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-Session-Token': '<api-key>', 'Content-Type': 'application/vnd.api+json'},
  body: JSON.stringify({
    data: {
      type: 'seat-class-changes',
      attributes: {seat_class: 'field', email: 'pat.jones@example.com'},
      relationships: {
        organisation: {data: {id: '3c90c3cc-0d44-4b50-8888-8dd25736052a', type: 'organisations'}}
      }
    }
  })
};

fetch('https://api.ctrl-hub.com/v3/users/{user_id}/seat-class-changes', 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://api.ctrl-hub.com/v3/users/{user_id}/seat-class-changes",
  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([
    'data' => [
        'type' => 'seat-class-changes',
        'attributes' => [
                'seat_class' => 'field',
                'email' => 'pat.jones@example.com'
        ],
        'relationships' => [
                'organisation' => [
                                'data' => [
                                                                'id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
                                                                'type' => 'organisations'
                                ]
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/vnd.api+json",
    "X-Session-Token: <api-key>"
  ],
]);

$response = curl_exec($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://api.ctrl-hub.com/v3/users/{user_id}/seat-class-changes"

	payload := strings.NewReader("{\n  \"data\": {\n    \"type\": \"seat-class-changes\",\n    \"attributes\": {\n      \"seat_class\": \"field\",\n      \"email\": \"pat.jones@example.com\"\n    },\n    \"relationships\": {\n      \"organisation\": {\n        \"data\": {\n          \"id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n          \"type\": \"organisations\"\n        }\n      }\n    }\n  }\n}")

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

	req.Header.Add("X-Session-Token", "<api-key>")
	req.Header.Add("Content-Type", "application/vnd.api+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://api.ctrl-hub.com/v3/users/{user_id}/seat-class-changes")
  .header("X-Session-Token", "<api-key>")
  .header("Content-Type", "application/vnd.api+json")
  .body("{\n  \"data\": {\n    \"type\": \"seat-class-changes\",\n    \"attributes\": {\n      \"seat_class\": \"field\",\n      \"email\": \"pat.jones@example.com\"\n    },\n    \"relationships\": {\n      \"organisation\": {\n        \"data\": {\n          \"id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n          \"type\": \"organisations\"\n        }\n      }\n    }\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.ctrl-hub.com/v3/users/{user_id}/seat-class-changes")

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

request = Net::HTTP::Post.new(url)
request["X-Session-Token"] = '<api-key>'
request["Content-Type"] = 'application/vnd.api+json'
request.body = "{\n  \"data\": {\n    \"type\": \"seat-class-changes\",\n    \"attributes\": {\n      \"seat_class\": \"field\",\n      \"email\": \"pat.jones@example.com\"\n    },\n    \"relationships\": {\n      \"organisation\": {\n        \"data\": {\n          \"id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n          \"type\": \"organisations\"\n        }\n      }\n    }\n  }\n}"

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

{
  "data": {
    "id": "123e4567-e89b-12d3-a456-426614174000",
    "type": "users",
    "attributes": {
      "email": "john.doe@example.com",
      "profile": {
        "work": {
          "occupation": "Site Manager",
          "cscs": "CSC123456",
          "eusr": "EUR789123",
          "start_date": "2020-03-01T00:00:00.000Z"
        },
        "personal": {
          "first_name": "John",
          "last_name": "Doe",
          "dob": "1985-06-15T00:00:00.000Z",
          "username": "johndoe"
        },
        "contact": {
          "mobile": "+44 7700 900123",
          "landline": "+44 20 7946 0958"
        },
        "address": {
          "name": "Tech Tower",
          "number": "42",
          "street": "High Street",
          "area": "Westminster",
          "town": "London",
          "county": "Greater London",
          "postcode": "SW1A 1AA",
          "country_code": "GB",
          "what3words": "filled.count.soap"
        },
        "settings": {
          "preferred_language": "en-GB",
          "timezone": "Europe/London"
        }
      },
      "status": "active",
      "seat_class": "full",
      "memberships": [
        {
          "organisation": "2f1e5a4c-8b7d-4c3e-9a1f-6d5b4c3a2e10",
          "status": "active",
          "seat_class": "record",
          "external_reference": "GR-0042"
        }
      ],
      "password_set_at": "2026-09-25T10:15:00.000Z",
      "mfa_enabled_at": "2026-10-06T09:30:00.000Z",
      "identities": [
        {
          "id": "39ce13b8-1116-416a-ad5f-3c5edfd44f53",
          "platform": "multi_tenant",
          "meta": {}
        }
      ]
    },
    "meta": {
      "managed_type": "none",
      "withheld_organisations": [
        "c000c344-8847-47da-a091-32e75902d3b1"
      ],
      "reach": "direct"
    },
    "relationships": {
      "organisations": {
        "data": [
          {
            "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
            "type": "organisations"
          }
        ]
      },
      "teams": {
        "data": [
          {
            "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
            "type": "teams"
          }
        ]
      },
      "managing_organisation": {
        "data": {
          "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
          "type": "organisations"
        }
      }
    }
  },
  "jsonapi": {
    "version": "1.0"
  },
  "included": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "type": "organisations",
      "attributes": {
        "name": "Acme Construction Ltd",
        "slug": "acme-construction",
        "sandbox": false,
        "description": "Leading construction company specializing in infrastructure projects",
        "settings": {
          "teams": {
            "customer_representatives": [
              "b234c567-8901-2345-6789-abcdef012345"
            ]
          },
          "security": {
            "require_mfa": false
          }
        }
      },
      "meta": {
        "v3": true,
        "status": "active",
        "created_at": "2023-01-15T10:30:00.000Z",
        "updated_at": "2023-02-20T14:45:00.000Z",
        "features": [
          {
            "name": "advanced_reporting",
            "enabled": true,
            "limit": 1000
          }
        ]
      },
      "relationships": {
        "users": {
          "data": [
            {
              "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
              "type": "users"
            }
          ]
        },
        "service_accounts": {
          "data": [
            {
              "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
              "type": "service-accounts"
            }
          ]
        },
        "groups": {
          "data": [
            {
              "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
              "type": "groups"
            }
          ]
        },
        "teams": {
          "data": [
            {
              "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
              "type": "teams"
            }
          ]
        },
        "nomenclature": {
          "data": {
            "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
            "type": "nomenclature"
          }
        }
      }
    }
  ]
}

{
  "id": "98ca4a78-b66f-4234-9719-aaf832ee6669",
  "status": "400",
  "title": "A validation error was encountered",
  "source": {
    "parameter": "include"
  },
  "meta": {
    "resource": "wrong_value"
  }
}

{
  "id": "05fc9c8d-73b9-4697-9337-57f7a567a48f",
  "status": "401",
  "title": "You are not authorised to access this resource",
  "detail": "In order to access this resource, you need the 'admin' role.",
  "code": "AUTH.001"
}

{
  "errors": [
    {
      "id": "1b3f2c30-2d56-4d3a-9c44-9be9c2cbf2f0",
      "status": "403",
      "title": "Forbidden",
      "detail": "You do not hold the grant required for this action.",
      "code": "AUTH.002"
    }
  ]
}

{
  "id": "7b4c8f12-3e9a-4d5b-8c6f-1a2b3c4d5e6f",
  "status": "404",
  "title": "Resource not found",
  "detail": "The requested resource could not be found or does not exist.",
  "code": "NOT_FOUND.001"
}

{
  "id": "8e2f9a34-b5c6-4d7e-9f8a-2b3c4d5e6f7g",
  "status": "409",
  "title": "Conflict",
  "detail": "The request conflicts with the current state of the resource.",
  "code": "CONFLICT.001"
}

{
  "id": "fe9d9a69-f0a7-4fdc-bb2c-176027f316c5",
  "status": "500",
  "title": "Internal Server Error",
  "detail": "An unexpected error occurred on the server."
}