Upload files to "system/uploads/paymentgateway"

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system/uploads/paymentgateway/flutterwave_currency.json

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+[
+	{
+		"id": "NGN",
+		"name": "Nigerian Naira"
+	},
+	{
+		"id": "GHC",
+		"name": "Ghana Cedis"
+	},
+	{
+		"id": "KES",
+		"name": "Kenyan Shilling"
+	},
+	{
+		"id": "ZAR",
+		"name": "South African Rand"
+	},
+	{
+		"id": "GBP",
+		"name": "British Pound Sterling"
+	},
+	{
+		"id": "USD",
+		"name": "United States Dollar"
+	},
+	{
+		"id": "TZS",
+		"name": "Tanzanian Shilling"
+	}
+]