curl --request POST \
  --url https://{projectHost}/collections/{collectionName}/docs/upsert \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "docs": [
    {
      "example-field1": "example-value1",
      "example-field2": [
        0.1,
        0.2,
        0.3
      ]
    },
    {
      "example-field1": "example-value2",
      "example-field2": [
        0.4,
        0.5,
        0.6
      ]
    }
  ]
}
'

{
  "message": "Upsert request is accepted"
}