Instead of using an external REST Client it's possible through interact with your data through the data console. You can perform all the CRUD operations and apply filtering options as described here:
You can post a single record or a batch of records in an Array.
POST a single record:
POST Multiple records
You can fetch all records or get a single record by applying filtering options. Below you will find some examples.
Get a single record by id
Get records filtered by a condition
To delete a record, just pass the ID of the record.