curl --request DELETE \
  --url https://api.harvey.ai/api/v1/vault/projects/{project_id}/users \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "emails": [
    "jsmith@example.com"
  ]
}
'

{
  "status": "COMPLETED",
  "data": {
    "project_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "removed": [
      "jsmith@example.com"
    ],
    "failed": [
      {
        "email": "jsmith@example.com",
        "reason": "<string>"
      }
    ]
  }
}