Minecraft wiki entry for execute, associated text: Arguments
<target>: entity
A single entity to store under
<path>: nbt_path
Location of the desired tag to hold the value in
<type> : literal (byte|short|int|long|float|double)
Desired data size/type
<scale>: double
Multiplier to apply before storing value
Result
Unparseable if the argument is not specified correctly.
Does not store anything when the path does not exist.