curl --request GET \
  --url https://{operatorDomain}/v1/admin/legal/contracts/{id}/signatures \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "<string>",
      "contractId": "<string>",
      "signerName": "<string>",
      "signerEmail": "jsmith@example.com",
      "signerRole": "<string>",
      "signatureData": "<string>",
      "signedAt": "2023-11-07T05:31:56Z"
    }
  ]
}