mutation DownloadSigningProfile($uuid: String!, $agentId: ID!) {
  downloadSigningProfile(uuid: $uuid, agentId: $agentId) {
    uuid
    filename
    contentBase64
  }
}

{
  "uuid": "string",
  "agentId": "id"
}

{
  "data": {
    "downloadSigningProfile": {
      "uuid": "id",
      "filename": "string",
      "contentBase64": "string"
    }
  }
}