User Identity (grader launch)
This parameter is used to define the scorer for the delivery. Entering a value for this parameter is required.
For more information, see User Identity claims in https://www.imsglobal.org/spec/lti/v1p3#user-identity-claims.
| key | Value | Default | description | 
|---|---|---|---|
| 
 | 
 | 
 | User Identifier must be unique to the platform from where the LTI launch occurs. Used as a unique identifier for the scorer. | 
Example:
        CODE
    
    "sub":"13242-1234657-65"