Retrieve all messages

curl --request GET \
  --url https://api-staging.respondent.io/v1/messaging/messages \
  --header 'x-api-key: <x-api-key>' \
  --header 'x-api-secret: <x-api-secret>'

{
  "page": 1,
  "pageSize": 50,
  "results": [
    {
      "createdAt": "<string>",
      "uid": "<string>",
      "body": "<string>",
      "conversation": {
        "createdAt": "<string>",
        "uid": "<string>",
        "name": "<string>",
        "deleted": true,
        "locked": true,
        "read": true,
        "participants": [
          {
            "uid": "<string>",
            "firstName": "<string>",
            "lastName": "<string>",
            "read": true,
            "deleted": true,
            "foreignId": "<string>"
          }
        ],
        "updatedAt": "<string>",
        "metadata": {
          "projectId": "<string>",
          "surveyResponseId": "<string>",
          "externalResearcherId": "<string>",
          "externalTeamId": "<string>",
          "externalCompanyId": "<string>"
        }
      },
      "sender": {
        "uid": "<string>",
        "firstName": "<string>",
        "lastName": "<string>",
        "foreignId": "<string>"
      },
      "updatedAt": "<string>"
    }
  ],
  "totalResults": 123
}