The escrow customer's main organization, the sender entity's fallback.
Set when escrow.recipientLedgerAccountId is: the credited account.
The identity whose external id is the escrow's recipient, if any.
The active identity of the escrow's customer with escrow.recipientPhone.
The identity whose external id is the escrow's sender, if any.
The escrow's status history in (created_at, id) order.
Each signature's on-chain transaction, its balances read at the account it moved: the recipient's for the release, the sender's for every other.