{"iss"=>"https://lti-ri.imsglobal.org", "login_hint"=>"435121", "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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.jxe89RE0wC0Qx0oC3kG3IZxIUdqaC7nUT9HBMVQRhdKJG4cU2gnmstBJEDh8DT8dAQtU8MLYXqfSCIkPpMcCZnw-Mw06qKAX8wOobm5OfI1xk1Qt3pDyE3Ugud3-NmXzRbnz68s2L-YqGChl2xypECiBSngGNS8ssZ5aru3NT2vOJwTpXEPi6vL72zqpl0AWlO6sxDKTas55INp4a6hEU2wu29WGova_haCyI_PGr5jlsNURQgL3RwBDLykbNbqFrCHGJ9Z0CGF01FLO9VhEp6IwvrZZyZHXxhG4P3A4YSim4sAXjrOSXIRNQg-0ajX2FEcAON20Fx24ojAVLqR-YA (required, opaque value used to maintain state between the request and the callback)

login_hint: 435121 (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: 0ec82c03875d7e602a32 (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)

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