Oozie email action truncating the string containing newline chars

[Buntu Dev]

I've this output captured from the shell action:

SHELL_OUTPUT='John,28,1,0
Jack,32,0,15
Mary,45,23,12
Jill,33,12,55'

The email action uses this captured output in the body like this:

Data: ${ wf:actionData('shell-c23f')['SHELL_OUTPUT'] }

But the email received seems to be truncated and only sending the first
line instead of the complete string, for example:

Data: John,28,1,0

How do I go about making sure the complete string is part of the body of
the email?

Thanks!