Retrieves the account data for a given account or contract identifier.
GET
/extended/v1/address/{principal}
Retrieves the account data for a given account or contract identifier, where the balance is the hex encoding of a unsigned 128-bit integer (big-endian), the nonce is an unsigned 64-bit integer, and the proofs are provided as hex strings.
For non-existent accounts, this does not return a 404 error. Rather it returns an object with a balance and nonce of 0.