It worked! Thank you.
The authorization format that worked was:
Dgraph.Authorization {“VerificationKey”:"-----BEGIN PUBLIC KEY-----\n…\n-----END PUBLIC KEY-----",“Header”:“X-Auth-Token”,“Namespace”:“https://dgraph.io/jwt/claims",“Algo”:“RS256”,“Audience”:["my_clientId”]}
I proposed changes to fix the tutorial docs(GraphQL): Update Dgraph authorization format in Todo tutorial by catherineluse · Pull Request #6442 · dgraph-io/dgraph · GitHub