conversation document

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            "dateLastConversationMessage" : ISODate("2016-11-10T17:59:56.626Z")
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            "username" : "*****"
        },
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        }
    },
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    "dateLastConversationMessage" : ISODate("2016-11-10T17:59:56.626Z"),
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    "flagAdultContent" : 0,
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    "lastMessage" : "*****",
    "mysqlId" : "*****",
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        "5942328",
        "9082468"
    ],
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}