{"category":"federal_account","spending_level":"transactions","limit":5,"page_metadata":{"page":1,"next":2,"previous":null,"hasNext":true,"hasPrevious":false},"results":[{"amount":7382093206.38,"id":4749,"code":"049-0100","name":"Research and Related Activities, National Science Foundation","total_outlays":null},{"amount":1490339921.66,"id":4751,"code":"049-0106","name":"STEM Education, National Science Foundation","total_outlays":null},{"amount":574751352.78,"id":4757,"code":"049-0551","name":"Major Research Equipment and Facilities Construction, National Science Foundation","total_outlays":null},{"amount":267948612.8,"id":4759,"code":"049-5176","name":"Salaries and Expenses, H-1B Funded, Education  and Human Resources, National Science Foundation","total_outlays":null},{"amount":181341709.73,"id":4753,"code":"049-0180","name":"Agency Operations and Award Management, National Science Foundation","total_outlays":null}],"messages":["For searches, time period start and end dates are currently limited to an earliest date of 2007-10-01.  For data going back to 2000-10-01, use either the Custom Award Download feature on the website or one of our download or bulk_download API endpoints as listed on https://api.usaspending.gov/docs/endpoints. ","'subawards' will be deprecated in the future. Set ‘spending_level’ to ‘subawards’ instead. See documentation for more information. "]}