Use BPM Task API authenticated by integration user

Summary:

Hello ,

Need to call bpm/api/4.0/tasks API to approve or reject notification which assigned to dynamic users, how to call it and which authentication should I use to avoid

"detail": "Identity service cannot get users when identities size crosses limit Fix: verify server log to find the problem cause"

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Version (include the version you are using, if applicable):

Fusion

Code Snippet (add any code snippets that support your topic, if applicable):