username:passwordAuthorization: Basic *****************curl --location --request POST 'https://portal-fax-api.faxsipit.com/api/endpoint/signin' \
--header 'Authorization: Basic <encoded-value>'{"code":1,"data":{"fsi_uid":"190e9c09-4fb7-4cb0-b0a4-acf93c2c2679","fsi_a_t":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJmc2lfdWlkIjoiMTkwZTljMDktNGZiNy00Y2IwLWIwYTQtYWNmOTNjMmMyNjc5IiwiZW1haWwiOiJudW9kaUBob3RtYWlsLmNvbSIsImlhdCI6MTc1NzYwOTc0NywiZXhwIjoxNzU3NjEzMzQ3fQ.KMGdzK22Qo9K4XTO2dJu_jAHQOnW5dV-PWMz7zDOmq0","fsi_r_t":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJmc2lfdWlkIjoiMTkwZTljMDktNGZiNy00Y2IwLWIwYTQtYWNmOTNjMmMyNjc5IiwiZW1haWwiOiJudW9kaUBob3RtYWlsLmNvbSIsImdyYW50X3R5cGUiOiJyZWZyZXNoIiwiaWF0IjoxNzU3NjA5NzQ3LCJleHAiOjE3NjUzODU3NDd9.M6dZwfwAdbMRaz2xw5rH_bVnLT7e4RdDLKlWg_0FmAQ"}}