Why does authenticateUser return a malformed request body error?

A malformed request body error usually means a field is the wrong type, for example reference_id must be a string, not an integer.

A malformed request body error usually means a field is the wrong type, for example reference_id must be a string, not an integer.

Newer Terra infrastructure enforces typing strictly per the API spec, so values that previously slipped through must now match the documented types.