new ProposalCreator()
        This object contains the essential identity information of the chaincode invocation's submitter,
including its organizational affiliation (mspid) and certificate (id_bytes)
    
    
    
    
    
    
    
Properties:
| Name | Type | Description | 
|---|---|---|
mspid | 
            
            string | The unique ID of the Membership Service Provider instance that is associated to the identity's organization and is able to perform digital signing and signature verification |