When viewing the ledger using the blockchain you will see an additional signatory on the account under account signers.
Since Mesh currently manages the access to the ledger via our platform, we require low-threshold signatory rights to any account created and managed via our platform.
This will only allow us access to:
Add and remove signatories on the account
Set limits for assets: This is used to manage the limits and balances for XLM in the account, which will be used to pay the Stellar network fees associated with any transactions.
This key will not be used to authorise transactions associated with movement of Stablecoin or Asset tokens issued on Mesh.