{"iss"=>"https://lti-ri.imsglobal.org", "login_hint"=>"468475", "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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.BrpGmBRJnvgul-xMMuv1E6GTyt73U3TNQ-m-tbWl29pRTq3F0EjdG9N2uiIZ5lfb2iwhsgoTcCrB7LxXEauDdFtWi7FHHuVDhFuLRRbjDsZOg-npsskAMj0VrKKsrnpE9h4H8scvV15_hh1VSVj9aZQbomolRIlClsQFdturO8sf075de65LN3x8n320Klok0Tyd2JF_ux8C__Wlim8owHr9AO4wMFEL54H5WZa_C2WwhEmMb8XOQw1NRTC0Tu9Hb4f6x_oaDwmACRMOT1CPupI0wkVD1mweo8TA8qCSc4WVxNILC6vSt_k1S-MY67-XSzhlFkiBbxHmLKoEP6UCTw (required, opaque value used to maintain state between the request and the callback)

login_hint: 468475 (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: 72909361942eb1c22954 (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)

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