Step3: doc deleted on server

doc-deleted

{
    "_deleted": true,
    "_sync": {
        "rev": "2-d06bc90a77b80dce7d007db5681475c4",
        "flags": 1,
        "sequence": 33,
        "recent_sequences": [
            32,
            33
        ],
        "history": {
            "revs": [
                "1-32ddb6b8a8cece7ee3de3f7d2020d9c7",
                "2-d06bc90a77b80dce7d007db5681475c4"
            ],
            "parents": [
                -1,
                0
            ],
            "deleted": [
                1
            ],
            "channels": [
                [
                    "channel.demo"
                ],
                [
                    "channel.demo"
                ]
            ]
        },
        "channels": {
            "channel.demo": null
        },
        "cas": "0x0000fe0be0905916",
        "value_crc32c": "0x00",
        "tombstoned_at": 1610477633,
        "time_saved": "2021-01-12T18:53:53.7092754Z"
    }
}