{"iss"=>"https://lti-ri.imsglobal.org", "login_hint"=>"577268", "target_link_uri"=>"https://lti-ri.imsglobal.org/lti/tools/1991/launches", "lti_message_hint"=>"37230", "client_id"=>"12345", "lti_deployment_id"=>"1"}

response_type: id_token (required, the tool must use a value of id_token)

redirect_uri: https://lti-ri.imsglobal.org/lti/tools/1991/launches (required, This URI must exactly match a value pre-registered with the platform)

response_mode: form_post (required, tools and platforms must support a value of form_post)

client_id: 12345 (required, client identifier valid at the Platform)

scope: openid (required, must contain the openid scope value)

state: eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6InRZQVlDbVFyWWRJaDdPVjdJQVI0Qml3YUJQNDBsX3gxazlYSDNoRTdOcFEiLCJ0eXAiOiJKV1QifQ.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.pfbPDMDqOEYgcomzDNcpaEOjztdrqsDnQOH6I9j2KD4eY_iEHkG4XQ9Ff4geez60jVs7Ywk54NGzyQAo2Dhyt9ZhAeL-t9V0NaXN-NCyWPJVYSwOJRoZafB7vGgcJs6M799a-ZWJbPtfPAfJs00UJhFFXqTEw5uIfJtFuwrH_jMSXWarkas26fj2CaHMvYKHQ7IR5BpEuT55-Jjo2QhIdVcl2gV9bc-ZjRnF-EgFOCDGA1kC1hVqpbXDJ3pHjOj10-J-EBbv0E-Ksjc5YAYz6bIrLiz5U4vuFRgSQhYk1UXWP1dUZKNKJpYeXlW6GlAapnOdNSaiejyxVCPljUpOuw (required, opaque value used to maintain state between the request and the callback)

login_hint: 577268 (required, tools and platforms must support a value of form_post)

lti_message_hint: 37230 (required, a platform opaque identifier identifying the user to login)

prompt: none (optional, The tool should use a value of none. In the future a re-launch flow may support additional values being used here)

nonce: 9f5e940e83fe715c1505 (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)

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