Upload events

curl --request POST \
     --url https://api.us1.odp.optimizely.com/v3/events \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '[
     {
     "type": "product",
     "action": "add_to_cart",
     "identifiers": ""
     }
     ]'