{
    "migration_start":
        {
            "share_id": "406ea93b-32e9-4907-a117-148b3945749f",
            "writable": true,
            "preserve_snapshots": true,
            "preserve_metadata": true,
            "nondisruptive": true,
            "host": "ubuntu@generic2#GENERIC2",
            "new_share_type_id": "foo_share_type_id",
            "new_share_network_id": "bar_share_network_id",
            "force_host_assisted_migration": false
        }
}