All queries must follow following syntax { "_operation" : operation, "_operation_args" : operation_args }

Following Operations are supported :

delete
update

delete

{
	"_operation" : "delete" ,
	"_operation_args" : {
							"query" : { 'patientId' : 'x' }
						}
}

update

{
	"_operation" : "update" ,
	"_operation_args" : {
							"query" : { 'patientId' : 'x' } ,
							"update": {$set: { 'age' : 'newage' }},
							"upsert": 'true',
							"multi" : 'false'
						}
}