[
  {
      "description": "Pub/Sub event timestamp",
      "name": "event_timestamp",
      "mode": "REQUIRED",
      "type": "TIMESTAMP"
  },
  {
      "description": "Transaction time string",
      "name": "tr_time_str",
      "type": "STRING"
  },
  {
      "description": "First name",
      "name": "first_name",
      "type": "STRING"
  },
  {
      "description": "Last name",
      "name": "last_name",
      "type": "STRING"
  },
  {
      "description": "City",
      "name": "city",
      "type": "STRING"
  },
  {
      "description": "State",
      "name": "state",
      "type": "STRING"
  },
  {
      "description": "Product",
      "name": "product",
      "type": "STRING"
  },
  {
      "description": "Amount of transaction",
      "name": "amount",
      "type": "FLOAT"
  }
]