Text alignment not working

[Dinothan-IdeaBits]

My draftjs block look like this:

{
"key": "6daf",
"text": "Title of the para",
"type": "unstyled",
"depth": 0,
"inlineStyleRanges": [
{
"offset": 0,
"length": 17,
"style": "color-rgb(0,0,0)"
},
{
"offset": 0,
"length": 17,
"style": "bgcolor-rgb(255,255,255)"
},
{
"offset": 0,
"length": 17,
"style": "fontfamily-Open Sans", sans-serif"
},
{
"offset": 0,
"length": 17,
"style": "BOLD"
},
{
"offset": 0,
"length": 17,
"style": "UNDERLINE"
},
{
"offset": 0,
"length": 17,
"style": "fontsize-18"
}
],
"entityRanges": [],
"data": {
"text-align": "center"
}
}

Text alignment is center. but when convert to StateToPdfMake using "draft-js-export-pdfmake", text not align center.