curl --request GET \
  --url 'https://scan.sv-1.global.canton.network.sync.global/api/scan/v0/synchronizer-identities/{domain_id_prefix}'

{
  "sequencer_id": "string",
  "sequencer_identity_transactions": [
    "string"
  ],
  "mediator_id": "string",
  "mediator_identity_transactions": [
    "string"
  ]
}