POST request containing array of JSON objects

An API I am using now sends data as an array of JSON objects. I am trying to receive this POST request with Frappe/ERPNext:

POST /your_url HTTP/1.1
Content-Type: application/json; charset=utf-8

[
  {
    "type"        : "message-received",
    "time"        : "2020-01-12T11:11:17Z",
    "description" : "Incoming message received",
    "message"     : "Test!"
  }
]

My test code is simply:

@frappe.whitelist(allow_guest=True)
def postTest():
    data = json.loads(frappe.request.data)

The error I am receiving in frappe.log is:

Request Error
Traceback (most recent call last):
File “/home/frappe/frappe-bench/apps/frappe/frappe/app.py”, line 52, in application
init_request(request)
File “/home/frappe/frappe-bench/apps/frappe/frappe/app.py”, line 115, in init_request
make_form_dict(request)
File “/home/frappe/frappe-bench/apps/frappe/frappe/app.py”, line 130, in make_form_dict
for k, v in iteritems(args) })
File “/home/frappe/frappe-bench/env/lib/python3.6/site-packages/six.py”, line 589, in iteritems
return iter(d.items(**kw))
AttributeError: ‘list’ object has no attribute ‘items’

Is there any way for me to properly receive these arrays?

I am using erpnext 12.5.2 and frappe 12.3.0 with python 3.6.9