{"iss"=>"https://lti-ri.imsglobal.org", "login_hint"=>"495100", "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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.dzRzTVwSwyBnzNqRXaXEyef1iUDEYPtdIKl35fUGsV9W5JB8Ak0yyGFyougsR9E2jRugGt3KQd03Hq2uvtCOjjzRUGY0mb8kNnR_sXtOkrfHASU0PaNvoZV4dPZIm90Np-lD633iFRHg4JGkCPCh_2dg3kBHPAp_Rjtwmz0C7eLVs4bOoX1AxWyDKHX5ImkJz1mSiJ3C1JmbA-IIjT8ZQNWYpGJC6390oCMjfHh4SPyf8P_-jBqeyRt_nU8gboc9RGPq-9XK-4rz3rai4n7HCqanEOVknA7NGvg87hlhmOsLZZfAzhQt_Ag29sbC9bjLWaKP1D7jdoJwHsW2ir2l3g (required, opaque value used to maintain state between the request and the callback)

login_hint: 495100 (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: d8baf119d49a1598287a (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)

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