JSON also sets the content header to application/json. 
    2.   Name string
    3.   Age  uint8
    4. }
    6. app.Get("/json", func(c *fiber.Ctx) error {
    7.   // Create data struct:
    8.     Name: "Grame",
    9.     Age:  20,
    10.   }
    12.   return c.JSON(data)
    13.   // => Content-Type: application/json
    15.   return c.JSON(fiber.Map{
    16.     "name": "Grame",
    17.     "age": 20,
    18.   })
    19.   // => Content-Type: application/json
    21. })