{"iss"=>"https://lti-ri.imsglobal.org", "login_hint"=>"797094", "target_link_uri"=>"https://lti-ri.imsglobal.org/lti/tools/2753/launches", "lti_message_hint"=>"69382", "client_id"=>"clientid12345", "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/2753/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: clientid12345 (required, client identifier valid at the Platform)

scope: openid (required, must contain the openid scope value)

state: eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6InNOcnhVbXNDeG9uZFRmdktxUWNUZDhTVnY1Yzlic2RGcGFBZnNLNndkR28iLCJ0eXAiOiJKV1QifQ.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.fsKjM5SoMhjHIbhOE49saJqx7PYnMkvtrA4Hbb6RO__RR9_rxYxBs-WHnurfnXBTk-waTtdZpMnqkJDCStT6CiuyTWhZYKfjLvdWvgoOvXKZI4Jok895vO_RoDAZqVCBsafbpzeeu_4ihe786tYimmjg0sSsrYROyT6kRireqHD22SVFSq_zzjGLkU8LtgotWZKGSAaYdDCKKHtyJY0__1Bnvksxv0dZMafkOxFFtD-YV4Ts4P3mTvawe2eLUPQQZmxEd7DbK7ttAxHs5zdpHO7WV1UM-cSORC_orPU0HhpAhUPyYZ5LSaOjAhbLnJjlQnicUFqdXJy84C2bTKCfKQ (required, opaque value used to maintain state between the request and the callback)

login_hint: 797094 (required, tools and platforms must support a value of form_post)

lti_message_hint: 69382 (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: a59f7bbc70c8fdc07ece (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)

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