Approve LC

The approveLC is used to approve LC and returns transaction receipt.

LCWrapper.approveLC(documentId, stage, subStage, content, from)

• documentId: string - hash of documentId
• stage: number
• subStage: number
• content: object

  Name	Type
  contentHash	string[]
  url	string
  signedTime	BN
  numOfDocuments	number
  acknowledgeSignature	string

• from: string - account send transaction

Return transaction receipt