curl --request PUT \
  --url https://api.us.lexful.app/v1/entities/{entityTypeName}/{entityId}/access_grants \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-Account-ID: <api-key>' \
  --data '
[
  {
    "id": "019983a9-c4c0-73af-aec9-463feeadc2e7",
    "subject_type": "user"
  },
  {
    "id": "019983a9-c4c1-7abc-def0-123456789abc",
    "subject_type": "group"
  }
]
'

{
  "status": 123,
  "message": "<string>",
  "error_id": "<string>",
  "error_code": "<string>",
  "developer_message": "<string>"
}