Create MerchantCustomer Session

{
  "session": {
    "program_code": "program-abc",
    "merchant_approval_url": "https://www.merchant.com/approved",
    "merchant_decline_url": "https://www.merchant.com/declined",
    "merchant_cancel_url": "https://www.merchant.com/canceled",
    "merchant_pending_url": "https://www.merchant.com/pending",
    "language": "en",
    "payment": {
      "processor": "2c2p",
      "token": "8429234238.1"
    },
    "simulate_outcome": "checkout",
    "customer": {
      "personal_details": {
        "first_name": "Elliot",
        "middle_name": "Lee",
        "last_name": "Alderson",
        "email": "elliot.alderson@gmail.com",
        "mobile_phone_number": "8403240590",
        "home_phone_number": "8403240590",
        "date_of_birth": "1986-09-17",
        "tax_id": "840324059",
        "annual_income": 130000
      },
      "billing_address": {
        "address_line_1": "123 Main St",
        "address_line_2": "Apt 4B",
        "city": "New York",
        "state_code": "NY",
        "postal_code": "10001",
        "country_code": "US"
      }
    },
    "order": {
      "currency": "USD",
      "plan_code": "plan-123",
      "merchant_order_id": "8429234238273948723947",
      "shipping_fee": 15.99,
      "merchant": {
        "source_channel_id": "ONLINE_SHIP_TO_HOME",
        "store_id": "store-123",
        "employee_id": "emp-456",
        "tender_type": "credit_card",
        "merchant_metadata": {
          "custom_key_1": "custom_value_1",
          "custom_key_2": "custom_value_2"
        }
      },
      "shipping_address": {
        "first_name": "Elliot",
        "last_name": "Alderson",
        "address_line_1": "217 East Broadway",
        "address_line_2": "Apt. 4E",
        "city": "New York",
        "state_code": "NY",
        "postal_code": "10002",
        "country_code": "US"
      },
      "merchant_items": [
        {
          "sku": "SKU-001",
          "description": "Laptop 15-inch display, 16GB RAM",
          "image_url": "https://www.merchant.com/images/laptop.png",
          "unit_sale_price": 999.99,
          "unit_retail_price": 1199.99,
          "quantity": 1,
          "merchant_order_item_id": "order_item_123",
          "parent_merchant_order_item_id": "order_item_100",
          "unit_total_price": 1049.99,
          "shipping_fee": 5.99,
          "subscription_plan_id": "plan-abc-24",
          "service_term_length": 24,
          "sales_tax_rates": [
            {
              "rate": 0.08,
              "amount": 8
            }
          ]
        }
      ]
    }
  }
}

{
  "session": {
    "session_id": "7x8mz4bhx2vgkxngshcdxpxx9pa",
    "status": "applying",
    "reservation_status": "waiting",
    "credit_application_url": "https://www.liftforward.com/en-us/program-abc/credit_application/npsbqvc6wk9ksnzctrnmn83rk6r",
    "account_url": "https://www.liftforward.com/en-us/program-abc/account?accesToken=qyq6pm4dq7hq2j8dwa43hh6w68e",
    "cart_url": "https://www.liftforward.com/en-us/program-abc/cart?accesToken=c6jyfads2vjwfxd372hhxsgskeb",
    "cart_id": "e2y3wt9tbkg4x8t3sbfy2kac7qq",
    "merchant_customer_id": "gjpxwyfb4yqwvvehraqbrcwcyxr",
    "program_code": "program-abc",
    "language": "en",
    "merchant_approval_url": "https://www.merchant.com/approved",
    "merchant_decline_url": "https://www.merchant.com/declined",
    "merchant_cancel_url": "https://www.merchant.com/canceled",
    "merchant_pending_url": "https://www.merchant.com/pending",
    "order": {
      "merchant": {
        "source_channel_id": "ONLINE_SHIP_TO_HOME",
        "store_id": "3028478594",
        "employee_id": "39383473893939",
        "merchant_metadata": {
          "custom_key_1": "custom_value_1",
          "custom_key_2": "custom_value_2"
        }
      },
      "merchant_order_id": "8429234238273948723947",
      "plan_code": "program-abc-24",
      "currency": "USD",
      "shipping_fee": 15.99,
      "shipping_address": {
        "address_line_1": "217 East Broadway",
        "address_line_2": "Apt. 4E",
        "city": "New York",
        "state_code": "NY",
        "postal_code": "10002",
        "country_code": "US",
        "first_name": "Elliot",
        "last_name": "Alderson"
      },
      "merchant_items": [
        {
          "sku": "30-X9383-94",
          "description": "Product 123",
          "merchant_order_item_id": "order_item_123",
          "quantity": 1,
          "unit_retail_price": 299.99,
          "unit_sale_price": 299.99,
          "unit_balloon_payment": 50,
          "unit_total_price": 356.63,
          "shipping_fee": 25.39,
          "sales_tax": 26.25,
          "sales_tax_rates": [
            {
              "sales_tax_rate_code": "VAT",
              "rate": 0.0875,
              "amount": 26.25
            }
          ],
          "misc_fees": 5,
          "apr": 0.0999,
          "installment_count": 36,
          "unit_installment_payment": 9.91,
          "unit_total_interest": 50,
          "parent_merchant_order_item_id": "order_item_123",
          "image_url": "https://placekitten.com/500/500",
          "description_list": [
            "Product has feature 1",
            "Product has feature 2"
          ]
        }
      ]
    }
  }
}