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launch_token: A single-use token for launch validation and score return. The launch token is in UUIDv4 format. Note: There is a reserved launch token (00000000-0000-4000-A000-000000000000) that is used by Terracotta when previewing a Qualtrics activity.
anonymous_id: Anonymized student identifier. This ID matches Terracotta’s participant_id, however, depending on the configuration in Terracotta, students who access an custom web activity may not be consenting participants. Thus, we use the label anonymous_id to refer to students accessing custom web activities.
assignment_id: Unique identifier for the Canvas assignment
submission_id: Unique identifier for the current submission attempt
condition_name: Experimental condition name
experiment_id: Unique identifier for the experiment (specific to the course)
due_at: Assignment due date and time
remaining_attempts: Number of remaining submission attempts. If there are unlimited attempts available to the student, remaining_attempts = u.
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