This is a configuration for reading Shelly Plus 4i inputs (Firmware version: i4prod0)

"Input 1": {
"topic": "shellies/shellyplusi4-xxxxxxxx/status/input:0",
"type": "244",
"subtype": "73",
"switchtype": "9",
"mapping": {"item":"state", "values": {"True": "On", "False": "Off"}
}

Just change ...