curl --request POST \
  --url 'https://api.nsr.stateset.com/api/v1/entities/batch' \
  --header 'X-API-Key: YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "entities": [
    {
      "entity_type": "string",
      "name": "string",
      "properties": {}
    }
  ]
}'

{
  "created": 1,
  "entities": [
    {
      "confidence": 1,
      "created_at": "string",
      "entity_type": "string",
      "has_embedding": true,
      "id": "string",
      "name": "string",
      "properties": {},
      "updated_at": "string"
    }
  ],
  "errors": [
    "string"
  ],
  "failed": 1
}