curl --request PATCH \
  --url https://api.terminal49.com/v2/parties/{id} \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
  "data": {
    "attributes": {
      "company_name": "COMPANY NAME"
    }
  }
}'

{
  "data": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "attributes": {
      "company_name": "<string>"
    },
    "type": "party"
  },
  "links": {
    "self": "<string>"
  }
}