\:the literal : (5810 / 728 / 3A16)
\s+a Unicode whitespace character, repeated at least once
\{the literal { (12310 / 1738 / 7B16)
Group data(?P<data>[^\}]+) Negated Character Class[^\}]+ +matches at least one character outside the set below:
\}the literal } (12510 / 1758 / 7D16)
\}the literal } (12510 / 1758 / 7D16)
\,the literal , (4410 / 548 / 2C16)
g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string