Hello jakefreese!
I'm not sure about the Particle webhook, but the fact that I'm seeing:
...in the feed is a problem. IO charting and dashboards expect to find the raw data value in there, in this case it'd be:
If you can modify things on your end so that only the raw value ends up in there, you should be good to go!
If that doesn't help, or you have more complex needs, please reply with more information about what you're doing. The IO API does support that kind of feed data structure (and lets you add metadata to the value as well), but it seems something about the way you are getting the data into IO isn't going through the API properly and it's taking the entire JSON string as the feed value (vs parsing it.)
Cheers!