Show me the ladder logic (in JSON format) for a system that turn on an output (O1) when an input (I1) is pressed, then turn it back off when I1 is pressed again.
{
"rung": [
{
"input": [
{"name": "I1", "type": "coil", "state": "on", "edge": "rising"}
],
"output": {"name": "O1", "type": "latch", "state": "on"}
},
{
"input": [
{"name": "I1", "type": "coil", "state": "on", "edge": "rising"},
{"name": "O1", "type": "coil", "state": "on"}
],
"output": {"name": "O1", "type": "latch", "state": "off"}
}
]
}