{"iss"=>"https://lti-ri.imsglobal.org", "login_hint"=>"749300", "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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.XO-4rB10uYlATGCDqtrMBg7n3t1u4_9nu02JWWIzEjH8_M6XEgSyrMtIOdC7xUZBeVEfCMwWa8FSCjCvzSifhEL-90fORlZ7bKtohYMHRm1Swvks6EnNdmvRfL3GFSznviEmiOZlJQq-RR-y6gNbvtJEjIiyJ6KoNU628kWpJfJVtMWZBxjzA9kfYb8yRclYBpxmf7RueizEghRKhH1JrpTalZxT1bijDUTKF1ezg9XBSDJi5ycZRavBgevxsuXcMtqycT8j_NRrhXCpldihiL6RzTEZ5KvMDq3lFl3L-W4lPNy2MmVqWSCPonWDN7i4vp_kPXbWiXCa6X5bOm2pbA (required, opaque value used to maintain state between the request and the callback)

login_hint: 749300 (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: ec3ab321eb72d09301c9 (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)

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