if you're using a bulk update query I'd expect an array like
[{ "metrics": "["Wind Speed","Wind Direction","Air Temperature"]", "id": "7" }]
instead of
{ "metrics": "["Wind Speed","Wind Direction","Air Temperature"]", "id": "7" }
Doing some testing on my end I see a similar error when that's not the case:
vs
Would you mind sharing a screenshot of the query you're using?