//Deposit Money

POST http://127.0.0.1:5000/deposit
Content-Type: application/json

{ "id": "17", "amount": 12 }

###

//Withdraw Money

POST http://127.0.0.1:5000/withdraw
Content-Type: application/json

{ "id": "17", "amount": 5 }

###

//View Balance

GET http://127.0.0.1:5000/17