Submitting the form will send the following values to the IdP:

actionhttps://login.microsoftonline.com/8807d267-3fda-4366-b38e-18280f4cb762/saml2
SAMLRequestPD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48c2FtbDJwOkF1dGhuUmVxdWVzdCB4bWxuczpzYW1sMnA9InVybjpvYXNpczpuYW1lczp0YzpTQU1MOjIuMDpwcm90b2NvbCIgQXNzZXJ0aW9uQ29uc3VtZXJTZXJ2aWNlVVJMPSJodHRwczovL3d3dy5oYXBhcmFuZGEuc2Uvc2FtbC9TQU1MQXNzZXJ0aW9uQ29uc3VtZXIiIERlc3RpbmF0aW9uPSJodHRwczovL2xvZ2luLm1pY3Jvc29mdG9ubGluZS5jb20vODgwN2QyNjctM2ZkYS00MzY2LWIzOGUtMTgyODBmNGNiNzYyL3NhbWwyIiBGb3JjZUF1dGhuPSJmYWxzZSIgSUQ9Il85YTlmMzc4MS1lZTFiLTQyZGUtYjBmMS04Mzc5N2YyZjg5ZGYiIElzUGFzc2l2ZT0iZmFsc2UiIElzc3VlSW5zdGFudD0iMjAyMi0wOC0xMFQyMDo0MzoyNi42MTJaIiBQcm90b2NvbEJpbmRpbmc9InVybjpvYXNpczpuYW1lczp0YzpTQU1MOjIuMDpiaW5kaW5nczpIVFRQLVBPU1QiIFZlcnNpb249IjIuMCIgeG1sbnM6ZHM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvMDkveG1sZHNpZyMiPjxzYW1sMjpJc3N1ZXIgeG1sbnM6c2FtbDI9InVybjpvYXNpczpuYW1lczp0YzpTQU1MOjIuMDphc3NlcnRpb24iPmh0dHBzOi8vd3d3LmhhcGFyYW5kYS5zZTwvc2FtbDI6SXNzdWVyPjxkczpTaWduYXR1cmUgeG1sbnM6ZHM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvMDkveG1sZHNpZyMiPjxkczpTaWduZWRJbmZvPjxkczpDYW5vbmljYWxpemF0aW9uTWV0aG9kIEFsZ29yaXRobT0iaHR0cDovL3d3dy53My5vcmcvMjAwMS8xMC94bWwtZXhjLWMxNG4jIi8+PGRzOlNpZ25hdHVyZU1ldGhvZCBBbGdvcml0aG09Imh0dHA6Ly93d3cudzMub3JnLzIwMDEvMDQveG1sZHNpZy1tb3JlI3JzYS1zaGEyNTYiLz48ZHM6UmVmZXJlbmNlIFVSST0iI185YTlmMzc4MS1lZTFiLTQyZGUtYjBmMS04Mzc5N2YyZjg5ZGYiPjxkczpUcmFuc2Zvcm1zPjxkczpUcmFuc2Zvcm0gQWxnb3JpdGhtPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwLzA5L3htbGRzaWcjZW52ZWxvcGVkLXNpZ25hdHVyZSIvPjxkczpUcmFuc2Zvcm0gQWxnb3JpdGhtPSJodHRwOi8vd3d3LnczLm9yZy8yMDAxLzEwL3htbC1leGMtYzE0biMiLz48L2RzOlRyYW5zZm9ybXM+PGRzOkRpZ2VzdE1ldGhvZCBBbGdvcml0aG09Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvMDkveG1sZHNpZyNzaGExIi8+PGRzOkRpZ2VzdFZhbHVlPmNobjZGTWF2YjJmME1PTHFaK0o5ekhtQ0lLZz08L2RzOkRpZ2VzdFZhbHVlPjwvZHM6UmVmZXJlbmNlPjwvZHM6U2lnbmVkSW5mbz48ZHM6U2lnbmF0dXJlVmFsdWU+Z2sralFHSmRjWVBSUEIreTgvYlRHd2tiRFlrMWpicjVJL3pXdXVCenZpRGlmajV2Nm1Oeit6TWx6ckdBOE15bkxoT3owejVOa08yL1htbStxdVJNa09NN3h6VXhVbjdxbXB6RHNaazlVRzNQbXpjMEFDSE1LaHVSUkMzUDJaNDhqVmF4V3lCRHo2V2NaTThkUHhwRWhUQnpaSFNwTVFLZzhUTFR3SVZiSjhBVFNTcm5ZMXBjZzN2dFo5WFJhZTRyS0kwZE5mKytGVTVSQTBSUEYyMWhHMWY2NDBvb1czeFdQVklsZE1FN0pldXZoSDNFdVJlYkNFSnZ6bjFVNWpqc2tPTXkvU1I0bzFvZnNuY0k5aGU4WS9BY0hJbU11cjM1a0dtSTdOMnBNcmRaM2pIbE54eWZBOXU2TytEeGM3a3B4bnU0cmRXdklyZUNQMy9SZEVOeGJRPT08L2RzOlNpZ25hdHVyZVZhbHVlPjxkczpLZXlJbmZvPjxkczpYNTA5RGF0YT48ZHM6WDUwOUNlcnRpZmljYXRlPk1JSURPRENDQWlDZ0F3SUJBZ0lHQVg1RUZ4MDdNQTBHQ1NxR1NJYjNEUUVCQ3dVQU1Ec3hJVEFmQmdOVkJBTU1HR2gwZEhCek9pOHYKZDNkM0xtaGhjR0Z5WVc1a1lTNXpaVEVXTUJRR0ExVUVDd3dOYzJsMFpYWnBjMmx2YmkxemNEQWVGdzB5TWpBeE1UQXhNekEwTXpKYQpGdzB6TWpBeE1EZ3hNekEwTXpKYU1Ec3hJVEFmQmdOVkJBTU1HR2gwZEhCek9pOHZkM2QzTG1oaGNHRnlZVzVrWVM1elpURVdNQlFHCkExVUVDd3dOYzJsMFpYWnBjMmx2YmkxemNEQ0NBU0l3RFFZSktvWklodmNOQVFFQkJRQURnZ0VQQURDQ0FRb0NnZ0VCQUxBK25HTnMKMXdoSEgybHhsV1Z5OVZVRitWZkdMZUNzY1dlUWJNQzBDbzdrQ2txci9hNENXejFwQWpTQy9hQWlYYitEZnQwN2NFQTBidjlYekdIUgpyOEFLQTFIODMxVWlOQ0RvenFFbFdWUVh4M20wNlNtU3VlVmhLbjYrMmFkS3ZYL2lkRWpBb3R1ZE1SY2ZCTmtIR1o3QUNOakgxeS92ClhIS1VrZXh1S210RDY0LzlMU2Z4TytrMzJxM0lFNzI4ZGRFTGFCRXF4MkJleVh3THd5eVFsVHBmYVNBQlhudGh1b3phcUljOWpOOGYKcEN5QzF1OTJSVEJoSU5oUEZwQmVBaVBMMTlCNDFQSyszc2dyN0hUUWc1b1NackVHRENsRHdtKzhDUjVBci9HR3RVMkcvYzRkWnlxNApEcEt2Q2gxZkxoYW4rNjFVTTQzOWQrK3ZjbEF0UVRFQ0F3RUFBYU5DTUVBd0hRWURWUjBPQkJZRUZJYlBzaDM5dXRPaVZ5M1kwUy9FCjJNN0NYSHd0TUI4R0ExVWRJd1FZTUJhQUZJYlBzaDM5dXRPaVZ5M1kwUy9FMk03Q1hId3RNQTBHQ1NxR1NJYjNEUUVCQ3dVQUE0SUIKQVFBeG9vbDJ1QmtJaGlGeS93VnpxY1QxN0EreitTei9nRFhjaUJYNEQxbDNnQk5OQ3Q3VldFL3VvbXBVbnp6eGpvMnpNUFBRNnJGWgo1bTBFWHdERGtNNUg5U09nQXRVRk53ZnZLUmNiZnpjdTJ2OTJ0ZTlKNVhGdWZhaFZhZ0tQbVZ0MXFPYzlJSVNVdjZZUmlxNEpPNGVVCm0xbFUxL3VmaUNIdDM4WVRkR1dxNW9vSjZpeGxNZGg2bEhLcXJVTHBUN0c3R084NEljRklESExYQ2JjWng0QVJJMkp6STR3ZnVNNW0KbHdvR0srWUxjZ3IxMEZ4QnI3ODQ2Y3RJaTV4MVJsMUZFTXJ1VUFPSGc3QkdlMHREaGhhREU4RlNVcWNxdmQwQXVEaFAyR2FUZ1NseApvUVhlNTlhWmRqVk1zL2xUOXR0MGxFVFA3YlZVdWlxS0NqZ24xRHFNPC9kczpYNTA5Q2VydGlmaWNhdGU+PC9kczpYNTA5RGF0YT48L2RzOktleUluZm8+PC9kczpTaWduYXR1cmU+PC9zYW1sMnA6QXV0aG5SZXF1ZXN0Pg==
RelayState_19b5623a-d017-42c0-a86f-f1bbd0e8e276