POST http://localhost:3000/sheet
Content-Type: application/json

{
  "api_key": "uwnpzb9hvoft28h",
  "sheet_token": "shtk4VNSEksIDylbZjl2N77vERg",
  "range": "vtLQhI",
  "values": [["1", "2"]],
  "type": "insert"
}