Name: update_content_item
	Parameters: access_token, content_item_id, payload (dict)
	Return: dictionary

def update_content_item(access_token, content_item_id, payload):
	'''
	Name: update_content_item
	Parameters: access_token, content_item_id, payload (dict)
	Return: dictionary
	'''

	headers = {'Authorization': 'Bearer ' + str(access_token)}
	content_item_url =\
		construct_content_item_url(enrichment_url, content_item_id)

	payload = create_random_payload(payload)
	request = requests.put(content_item_url, json=payload, headers=headers)

	if request.status_code == 200:

		content_item = request.json()
		return content_item

	return {'status': request.status_code, "message": request.text}