curl --request POST \
  --url https://api.example.com/v2/parties/external/generate-topology \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "synchronizer": "<string>",
  "partyHint": "<string>",
  "publicKey": {
    "format": "CRYPTO_KEY_FORMAT_DER_X509_SUBJECT_PUBLIC_KEY_INFO",
    "keyData": "<string>",
    "keySpec": "SIGNING_KEY_SPEC_EC_CURVE25519"
  },
  "localParticipantObservationOnly": true,
  "otherConfirmingParticipantUids": [
    "<string>"
  ],
  "confirmationThreshold": 123,
  "observingParticipantUids": [
    "<string>"
  ]
}
'

{
  "partyId": "<string>",
  "publicKeyFingerprint": "<string>",
  "topologyTransactions": [
    "<string>"
  ],
  "multiHash": "<string>"
}