I need help getting audit events from our vault using the CLI

Our SIEM tool doesn't have a built in integration with 1Password, so I'm trying to use the CLI to make API calls that will audit event logs. The plan is to have the logs sent to an S3 bucket.
I've got 2 questions
-One is the best way to get the audit events from 1Password to an S3 bucket
-I'm getting errors on the CLI when I try to use this command to make an API call

cmd /c curl --request POST --url https://events.1password.com/api/v1/itemusages --header "Authorization: Bearer 'Bearer_Token' --header 'Content-Type: application/json' --data '{ "limit":10, "start_time":"2023-03-28T16:32:50-03:00"}'

I get this error
{"Error":{"Message":"Bad Request"}}

1Password Version: Not Provided
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OS Version: Windows
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