I have a dictionary as follows 

```
{"SPORTS": {"data": [["Bball", "10", 3]], "columns": ["SPORT", "MATCHES", "WINS"]}, "GRAMMY": {"data": [["Billy Joel", "Rock", 1], ["Elton John", "FUnk", 2]], "columns": ["ARTIST", "GENRE", "ID"]}, "SONGS": {"data": [], "columns": ["NAME", "ARTIST", "SONG_ID"]}}

```

I want to sort this dictionary by the size of the "data" list . In other words the above I want sorted as 

```
{"GRAMMY": {"data": [["Billy Joel", "Rock", 1], ["Elton John", "FUnk", 2]], "columns": ["ARTIST", "GENRE", "ID"]},"SPORTS": {"data": [["Bball", "10", 3]], "columns": ["SPORT", "MATCHES", "WINS"]}, "SONGS": {"data": [], "columns": ["NAME", "ARTIST", "SONG_ID"]}
}

```

where Grammy Table has 2 rows, Sports Table has one row and SONGS has none