Add memory

curl --request POST \
  --url https://api.circlemind.co/graph/{graph_name}/insert \
  --header 'Content-Type: application/json' \
  --header 'apiKey: <api-key>' \
  --data '{
  "memory": "<string>",
  "metadata": "<string>",
  "memoryId": "<string>"
}'

{
  "requestId": "<string>",
  "requestTime": 123,
  "memoryId": "<string>"
}