How to remove double quotes from Field

[Saket_Kumar]

I am parsing a CSV which has a column field name and values within double quotes.

I have to rename the field such as:
mutate {rename => { '"ttfb_ms"' => "Time_to_First_Byte_(ms)" }}

And also have to remove double quotes from the column values.

"123" to 123

Is there any ways?

[Saket_Kumar]

i got the way to do....
Field rename:
mutate {rename => { '"ttfb_ms"' => "Time_to_First_Byte_(ms)" }}

removal of double quotes from column value:
mutate { gsub => ["Time_to_First_Byte_(ms)","\"",""]}