trait_typeis the name of the trait,
valueis the value of the trait, and
display_typeis a field indicating how you would like a numeric value should be displayed. For string traits, you don't have to worry about
display_type. All traits included in the attributes will be displayed in
Attribute. If you don't want to have a
trait_typefor a particular trait, you can include just a value in the trait and it will be set as a generic attribute.
numberwill show the value in pure number,
boost_numberallows you to show the number with Plus or Minus symbol, and
boost_percentageis similar to boost_number but will show a percent sign behind the number.
display_type. Pass in a unix timestamp as the value.