{ "db.test": { "escCollection": "fle2.test.esc", "ecocCollection": "fle2.test.ecoc", "fields": [ { "keyId": { "$binary": { "base64": "EjRWeBI0mHYSNBI0VniQEg==", "subType": "04" } }, "path": "encrypted", "bsonType": "double", "queries": { "queryType": "rangePreview", "contention": { "$numberInt": "0" }, "sparsity": { "$numberInt": "1" } } } ] } }