Creates a new payment request. Will return request id to check for transaction state and ergopay url to show the user as QR code

{
  "type": "object",
  "required": [
    "nanoErg",
    "receiverAddress"
  ],
  "properties": {
    "message": {
      "type": "string"
    },
    "nanoErg": {
      "type": "integer",
      "format": "int64"
    },
    "receiverAddress": {
      "type": "string"
    },
    "senderAddress": {
      "type": "string"
    },
    "tokenId": {
      "type": "string"
    },
    "tokenRawAmount": {
      "type": "integer",
      "format": "int64"
    }
  }
}