[Mobile] Output json file looks weird

[excess4]

Suppose we have input strings like this:

The output json file would be
{"insert":"AAA\nBBB\nCCC"},{"insert":"\n","attributes":{"align":"center"}},
{"insert":"DDD"},{"insert":"\n","attributes":{"align":"right"}}

Any chance to let AAA and BBB has an attribute "align":"left" and CCC with {"align":"center"} respectively?
Thank you