db.json

{
    "messages": [
       {
         "attachment":{
           "type":"template",
           "payload":{
             "template_type":"generic",
             "image_aspect_ratio": "square",
             "elements":[
               {
                 "title":"Chatfuel Rockets Jersey",
                 "image_url":"https://rockets.chatfuel.com/assets/shirt.jpg",
                 "subtitle":"Size: M",
                 "buttons":[
                   {
                     "type":"web_url",
                     "url":"https://rockets.chatfuel.com/store",
                     "title":"View Item"
                   }
                 ]
               },
               {
                 "title":"Chatfuel Rockets Jersey",
                 "image_url":"https://rockets.chatfuel.com/assets/shirt.jpg",
                 "subtitle":"Size: L",
                 "default_action": {
                   "type": "web_url",
                   "url": "https://rockets.chatfuel.com/store",
                   "messenger_extensions": true
                 },
                 "buttons":[
                   {
                     "type":"web_url",
                     "url":"https://rockets.chatfuel.com/store",
                     "title":"View Item"
                   }
                 ]
               }
             ]
           }
         }
       }
     ]
   }