curl --request PUT \
  --url https://{host}/api/v1/contacts/by-reference/{reference} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "attributes": {},
  "dnc": true,
  "e164": "<string>",
  "name": "<string>",
  "organisation_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    attributes: {},
    dnc: true,
    e164: '<string>',
    name: '<string>',
    organisation_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a'
  })
};

fetch('https://{host}/api/v1/contacts/by-reference/{reference}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://{host}/api/v1/contacts/by-reference/{reference}"

payload = {
    "attributes": {},
    "dnc": True,
    "e164": "<string>",
    "name": "<string>",
    "organisation_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "attributes": {},
  "call_count": 123,
  "created_at": "2023-11-07T05:31:56Z",
  "dnc": true,
  "e164": "<string>",
  "external_ref": "<string>",
  "first_seen": "2023-11-07T05:31:56Z",
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "last_seen": "2023-11-07T05:31:56Z",
  "name": "<string>",
  "organisation_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}

{
  "attributes": {},
  "call_count": 123,
  "created_at": "2023-11-07T05:31:56Z",
  "dnc": true,
  "e164": "<string>",
  "external_ref": "<string>",
  "first_seen": "2023-11-07T05:31:56Z",
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "last_seen": "2023-11-07T05:31:56Z",
  "name": "<string>",
  "organisation_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>"
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>"
  }
}