message: Slight improvement to pending approval types
  Ticket:
diff: @@ -16,7 +16,7 @@ const co = Bluebird.coroutine;
  export interface PendingApprovalInfo {
  type: Type;
  transactionRequest?: {
  - coinSpecific: any;
  + coinSpecific: { [key: string]: any };
  recipients: any;
  buildParams: any;
  sourceWallet?: string;
  