Let's put it in a new json object keyed by `campaign`


```
{
    "campaign": {
        "name": "",
        "content": "",
        "source": "",
        "term": ""
    }
}
```
-----------------------------------------------------

Specs: mapping existing value -> new value

`name`: name of the campaign. This is mapped from the "0" key
value mapping:

| 0 key value | new string value      |
|:--------------:|:---------------------:|
|       1        |    open_house         |
|       2        |    price_change       |
|       3        |     new_listed        |
|       4        |     sold              |
|       5        |     in_contract       |
|       6        | off_market_or_removed |
|       7        |     search_updates    |
| 8 | marketing |
| 9 | building |
| 10 | inferred |
| otherwise | unknown |

-----------------------------------------------------

`content`: what's included in the push notification. (type of item)

| number key | new value for content |
|:----------:|:---------------------:|
| 7 | search |
| 1 | sale |
| 2 | rental |
| 3 | building |

-----------------------------------------------------

`source`: what triggered the push notification

| 0 key value | new value for source |
|:--------------------:|:--------------------:|
| 8 | marketing |
| 10 | inferred |
| others | saved |

-----------------------------------------------------

`term`: the id of `content`

| number key | new value for term |
|:----------:|:------------------:|
| 7 | :folder_entry_id |
| 1 | :sale_id |
| 2 | :rental_id |
| 3 | :building_id |
| otherwise | nil |