First, a pro-tip for Mount Spokane trail naming protocol: Mount Spokane uses three digit numbers for system trails. All trail numbers that end in a zero are main trails, and all trails that end in a number other than zero are spur trails that connect to the main trail.
Therefore, trail 132 is the second spur trail off of main trail 130. It is an old roadbed converted into a multi-use trail that is seldom hiked by itself, but rather used as a connector trail to help form loop hikes.
Most park visitors who use trail 132 prefer the short loop route it creates when paired with trail 131 and 130, using just the portion of trail 130 that connects between the two spur trails. The section of trail 130 in this area is also known as the B-29 cat track within the ski area, which means that trail 132 is a summer-only trail and the short loop is off-limits when the ski area is operating in the winter.
For adventurous hikers, trail 130 is the longest trail in the park, and actually climbs over the summit of Day Mountain before encircling Mount Spokane at approximately the 5000-foot elevation level (with a lot of ups & downs along the way). Portions of this route are open for year-round use, although snowshoe and ski visitors will need to become familiar with both the portions that are open to winter motorized use and also the portions that enter the ski area and are therefore off-limits when the ski area is open.
For either choice, the recommended route is to begin on trail 131 before choosing either the short or the long version of trail 130, then using trail 132 to complete the circuit. The short loop is a little over 2 miles; the long loop is closer to 16 miles.