{

  "object": "whatsapp_business_account",

  "entry": [{

      "id": "WHATSAPP_BUSINESS_ACCOUNT_ID",

      "changes": [{

          "value": {

              "messaging_product": "whatsapp",

              "metadata": {

                  "display_phone_number": PHONE_NUMBER,

                  "phone_number_id": PHONE_NUMBER_ID

              },

              "contacts": [{

                  "profile": {

                    "name": "NAME"

                  },

                  "wa_id": PHONE_NUMBER

                }],

              "messages": [{

                  "from": PHONE_NUMBER,

                  "id": "wamid.ID",

                  "timestamp": TIMESTAMP,

                  "text": {

                    "body": "MESSAGE_BODY"

                  },

                  "type": "text"

                }]

          },

          "field": "messages"

        }]

  }]

}