curl --request PATCH \
  --url https://api.eu.bronto.io/customer \
  --header 'Content-Type: application/json' \
  --header 'X-BRONTO-API-KEY: <api-key>' \
  --data '
{
  "customer_name": "<string>",
  "billing_emails": [
    "jsmith@example.com"
  ]
}
'

{
  "customer_id": "cust_12345",
  "org_id": "org_67890",
  "customer_name": "Acme Inc.",
  "billing_emails": [
    "billing@acme.com",
    "finance@acme.com"
  ],
  "contract_type": "Enterprise",
  "ou_id": "ou_34567",
  "parent": "parent_98765",
  "metadata": {
    "created_at": 123,
    "created_by": {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
    },
    "modified_at": 123,
    "modified_by": {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
    },
    "deleted_at": 123,
    "deleted_by": {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
    },
    "last_heartbeat_at": 123
  },
  "organisations": [
    {
      "org_id": "org_67890",
      "region": "eu-west-1",
      "name": "Acme EU"
    }
  ]
}