JsonSchema.json

For proper splitting of objects see here: http://stackoverflow.com/questions/7460934/best-practices-in-retrieving-related-data-in-a-rest-api
For faking data: https://github.com/marak/Faker.js/
JSON Schema: 

    {
    	"$schema": "http://json-schema.org/draft-04/schema#",
    	"title": "Account Data",
    	"description": "All information pertaining to a single account",
    	"type": "object",
    	"properties": {
    		"Username": {
    			"type": "string",
    			"faker": {
    				"fake": "{{internet.userName}}"
    			}
    		},
    		"Password": {
    			"type": "string",
    			"faker": {
    				"fake": "{{internet.password}}"
    			}
    		},
    		"Honorary": {
    			"type": "string",
    			"faker": {
    				"fake": "{{name.prefix}}"
    			}
    		},
    		"FirstName": {
    			"type": "string",
    			"faker": {
    				"fake": "{{name.firstName}}"
    			}
    		},
    		"LastName": {
    			"type": "string",
    			"faker": {
    				"fake": "{{name.lastName}}"
    			}
    		},
    		"MailingAddress": {
    			"type": "string",
    			"faker": {
    				"fake": "{{address.streetAddress}}"
    			}
    		},
    		"TelephoneAddress": {
    			"type": "integer",
    			"faker": {
    				"fake": "{{phone.phoneNumber}}",
    				"faker": "{{phone.phoneNumberFormat}}"
    			}
    		},
    		"EmailAddress": {
    			"type": "string"
    		},
    		"BankAccounts": [{
    			"SortCode": {
    				"type": "integer"
    			},
    			"AccountNumber": {
    				"type": "integer"
    			},



    			"Cards": {
    				"DebitCard": {
    					"NameOnCard": {
    						"type": "string"
    					},
    					"LongNumber": {
    						"type": "integer"
    					},
    					"StartDate": {
    						"type": "string"
    					},
    					"ExpiryDate": {
    						"type": "string"
    					},
    					"CardVerificationValue": {
    						"type": "string"
    					},
    					"Status": {
    						"type": "string"
    					}
    				},


    				"CreditCard": {
    					"NameOnCard": {
    						"type": "string"
    					},
    					"LongNumber": {
    						"type": "integer"
    					},
    					"ExpiryDate": {
    						"type": "string"
    					},
    					"CardVerificationValue": {
    						"type": "string"
    					},
    					"Status": {
    						"type": "string"
    					}
    				}
    			}
    		}]

    	},
    	"required": ["Username", "Password", "Honorary", "FirstName", "LastName", "MailingAddress", "TelephoneAddress", "EmailAddress", "BankAccounts"]
    }
{

	"Username":"",
	"Password":"",
	"Honorary":"",
	"FirstName":"",
	"LastName":"",
	"MailingAddress":"",
	"TelephoneAddress":"",
	"EmailAddress":"",
	"BankAccounts": [	
		{
			"SortCode":"",
			"AccountNumber":"",
			"Cards": [
				{
					"Type": "Debit",
					"NameOnCard": "",
					"LongNumber": "",
					"StartDate": "",
					"ExpiryDate": "",
					"CardVerificationValue": "",
					"Status":""
				},
				{
					"Type": "Credit",
					"NameOnCard": "",
					"LongNumber": "",
					"ExpiryDate": "",
					"CardVerificationValue": "",
					"Status": ""
				}
			],
			"Transfers": [
				{
					"TransferID": "",
					"Type": "",
					"FromAccountDetails": "",
					"ToAccountDetails": "",
					"AmountInGBP": "",
					"AccountTotal": ""
				}
			],
			"StandingOrders":[
				{
					"Reference": "",
					"AccountNumber": "",
					"SortCode": "",
					"Amount": "",
					"DateOfFirstPayment": "",
					"DateOfLastPayment": "",
					"Frequency": "",
					"ContinueUntilCancelled": ""
				}
			],
			"DirectDebits": ""
		}
	]
}