https://configuat.blob.core.windows.net/b2c/Motorist/uat/files/ar/es/config_AR_es.json
This is my web service address. As a read here there is a way to update Blob storage and I could not get the Signature.
My account is: configuat.
When using Shared Key authentication, the Authorization header must be in a specific format and must be able to authenticate your request with a matching signature. For more information on this topic, please see our MSDN article Authentication for the Windows Azure Storage Services.