{"iss"=>"https://lti-ri.imsglobal.org", "login_hint"=>"444104", "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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.P0wHuH8-5Iyr61rl7krREhSMzBVGGvYYki9xX75cMkrKmbBqFyvEvAOLbPTS5m0LKHV6WyGbAUf4jvyF4rShttaM2eldM_57Mw5j9i1_zEkjS4wQ2gJCtQkWkxdLn54LFU97h_8RXui6TDp5MYQFUw68tGYutH93S_cSL9eX8NaUYMAXLTFSHT59hAOju_BBdc6PngpnjO7hKR_dpAtmWooRG-5L1692IGIueE72EwYxddaE4ffeXQIWC6APzoIvOeSBkxs4CqZzOEHWi_QnU7aKtIvKuLodXHFRQW1I1RnKXrDldL9OzmV_94zkvAIPWpE8E2I8Y4xJEdEe0ozGeg (required, opaque value used to maintain state between the request and the callback)

login_hint: 444104 (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: 971f2bb0bf37c2398813 (optional, string value used to associate a client session with an ID token, and to mitigate replay attacks)

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