curl --request PATCH \
  --url https://api.arcuserp.com/v1/accounts/{id}/contacts/{cnt_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "first_name": "<string>",
  "last_name": "<string>",
  "email": "<string>",
  "phone": "<string>",
  "title": "<string>",
  "website": "<string>",
  "is_primary": true
}
'

{
  "data": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "account_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "first_name": "<string>",
    "last_name": "<string>",
    "email": "<string>",
    "phone": "<string>",
    "title": "<string>",
    "website": "<string>",
    "is_primary": true,
    "created_at": "2023-11-07T05:31:56Z"
  }
}