Are you ready for this? 
```
{
  "kind": 35337,
  "content": "",
  "tags": [
    [ "d", "SheetStr Demo" ],
    [ "data", "Sheet1", "J", "25", "3"],
    [ "data", "Sheet1", "J", "26", "5"],
    [ "data", "Sheet1", "J", "27", "=SUM(J25:J26)"]
  ],
  "created_at": 1713819120,
  "pubkey": "...",
  "id": "...",
  "sig": "..."
}
```