curl --request POST \
  --url https://api.salesbricks.com/api/v2/subscriptions \
  --header 'Content-Type: application/json' \
  --header 'X-SALESBRICKS-KEY: <api-key>' \
  --data '{
  "starts_at": "2023-12-25",
  "contract_length": 2,
  "billing_frequency": "MONTHLY",
  "plan_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "bricks": [
    {
      "brick_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "quantity": 123,
      "discount": {
        "rate": "<string>",
        "renews": true
      }
    }
  ],
  "currency": "USD",
  "discount_coupons": [
    "<string>"
  ],
  "point_of_contact_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "signatory_user_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "auto_renews": true,
  "accounts_payable_emails": [
    "jsmith@example.com"
  ],
  "customer_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "payment_terms": 499,
  "metadata": "<any>",
  "custom_order_form_html": "<string>",
  "accepted_payment_methods_config": {
    "paywall_credit_card": true,
    "paywall_check": true,
    "paywall_ach": true,
    "paywall_wire": true,
    "checkout_credit_card": true,
    "checkout_ach": true,
    "checkout_order_form": true,
    "minimum_order_form_tcv": 0,
    "paywall_force_autopay": false
  }
}'

{
  "error": {
    "code": "ERR_BAD_REQUEST",
    "message": "Bad request — the input payload is malformed, missing required fields, or contains invalid data."
  }
}