Create or update one admin-managed provider credential

A valid request URL is required to generate request examples

{
  "api_keys": [
    "<string>"
  ],
  "api_mode": "<string>",
  "api_version": "<string>",
  "auth_type": "<string>",
  "backend": "<string>",
  "base_url": "<string>",
  "created_at": "<string>",
  "enabled": true,
  "gcp_scope": "<string>",
  "managed": true,
  "models": [
    "<string>"
  ],
  "name": "<string>",
  "proxy_url": "<string>",
  "service_account_file": "<string>",
  "service_account_json": "<string>",
  "service_account_json_base64": "<string>",
  "session_sticky_keys": true,
  "type": "<string>",
  "updated_at": "<string>",
  "vertex_location": "<string>",
  "vertex_project": "<string>"
}

{
  "code": "<string>",
  "message": "<string>",
  "param": "<string>",
  "provider": "<string>",
  "status_code": 123,
  "type": "provider_error"
}

{
  "code": "<string>",
  "message": "<string>",
  "param": "<string>",
  "provider": "<string>",
  "status_code": 123,
  "type": "provider_error"
}

{
  "code": "<string>",
  "message": "<string>",
  "param": "<string>",
  "provider": "<string>",
  "status_code": 123,
  "type": "provider_error"
}

{
  "code": "<string>",
  "message": "<string>",
  "param": "<string>",
  "provider": "<string>",
  "status_code": 123,
  "type": "provider_error"
}