https://runtime-6h2n6fxwsq-uk.a.run.app/dailycheckin?uid=doc
checkintime
[{checkintime: "asc"}]
The array of filter objects, each object includes {field, operator, value}[]
[{field:”checkinTime”}]
[{"operator":"<","value":(new Date()).getTime()-606024*1000,"field":"checkinTime"}]