Service Operation name:
NF consumer request NRF to provide Access Token.
Known NF Consumers:
AMF, SMF, PCF, NEF, NSSF, SMSF, and AUSF.
the NF Instance Id of the NF service consumer, expected NF service name(s), NF types of the expected NF producer instance and NF consumer.
Home and serving PLMN IDs.
Access Token with appropriate claims, where the claims shall include NF Instance Id of NRF (issuer), NF Instance Id of the NF Service consumer (subject), NF type of the producers (audience), expected service name (scope) and expiration time (expiration).