{"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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.A8ohUBl7aZSH8r0Z-dlUZtPDAgVGNpcgKdSpBKeKXl6asLcfk1jh0Y5E2fgOMAis8OY3jveQvfcIzCI9ZIBMdx1FHQU8mt2C5_OUBoeJTOnxNJmeHd1-Rk09TdaXubkyXr2SpNuJLXRKAP1HL7Mw4leCJfIa-pLjfwVdNScLJV8gVm-QTcrKLFyK8GwH-zLtNR81gUaF8QFqskR0wRgs7wzqZZHk-6ZPd9EQRfZ64mP-pKDr6fxA6qwESiminL7TiBUYzvg31meW30Oyhm8eI8fppmuwIU-TOCsH6EAOLUIl6X0Nw2uUyce7wmR9Hfoy-faUuOgeMQ6X9ClVFf8Qpg (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: 9f496a7b4ede99db5f4f (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)

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