title: How to validate transaction manually in hyperledger-fabric
body: <p>Would you tell me, if fabric does manual transaction validation?
  i.e: Before a transaction could be archived in the ledger, it must be signed by the organization which evolved in the endorsement policies. This process of validation, by signing the transaction, could it be done manually by a decision of the user ( Clicking button )?</p>
  <p>Thanks.</p>