[REST API] Filtering on "updatedOn" using the ">" operator returns 400 - Bad Request

@Mosh @Steve E 

Here's the request I'm making, which is successful (I've included the full python script):

#!/bin/env python

import requests
import json
import hashlib
import base64
import time
import hmac

#Account Info
AccessId ='ACCESS_ID'
AccessKey ='ACCESS_KEY'
Company = 'COMPANY_NAME'

#Request Info
httpVerb ='GET'
resourcePath = '/device/devices'
queryParams = '?filter=updatedOn>1477952627'
data=''

#Construct URL 
url = 'https://'+ Company +'.logicmonitor.com/santaba/rest' + resourcePath + queryParams

#Get current time in milliseconds
epoch = str(int(time.time() * 1000))

#Concatenate Request details
requestVars = httpVerb + epoch + data + resourcePath

#Construct signature
signature = base64.b64encode(hmac.new(AccessKey,msg=requestVars,digestmod=hashlib.sha256).hexdigest())

#Construct headers
auth = 'LMv1 ' + AccessId + ':' + signature + ':' + epoch
headers = {'Content-Type':'application/json','Authorization':auth}

#Make request
response = requests.get(url, data=data, headers=headers)

#Print status and body of response
print 'Response Status:',response.status_code
print 'Response Body:',response.content