curl --request POST \
  --url https://api.justpaid.io/api/v1/payment/invoice_payment/create \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "invoice": {
    "amount": 123,
    "invoice_number": "<string>",
    "line_items": [
      {
        "amount": 123,
        "name": "<string>",
        "unit_price": 123,
        "quantity": 1,
        "currency": "USD",
        "description": "<string>"
      }
    ],
    "currency": "USD",
    "invoice_date": "2023-12-25",
    "description": "<string>"
  },
  "customer_uuid": "<string>"
}
'

{
  "invoice": {
    "amount": 123,
    "invoice_number": "<string>",
    "line_items": [
      {
        "name": "<string>",
        "unit_price": 123,
        "quantity": 1,
        "amount": 123,
        "currency": "USD",
        "description": "<string>",
        "flat_fee": 123
      }
    ],
    "uuid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "currency": "USD",
    "invoice_date": "2023-12-25",
    "description": "<string>"
  },
  "total_amount": 123,
  "customer_uuid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "payment_status": "<string>",
  "uuid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "reference_number": "<string>",
  "payment_scheduled_date": "2023-11-07T05:31:56Z",
  "payment_completed_date": "2023-11-07T05:31:56Z"
}