List documents for application

Example response

{
  "items": [
    {
      "_id": "doc_tz4a98xxat96iws9zmbrgj3a",
      "_application": "application_tz4a98xxat96iws9zmbrgj3a",
      "channel": {
        "_id": "sharing_request_tz4a98xxat96iws9zmbrgj3a"
      },
      "source": {
        "_id": "oneoff_ob_connection_tz4a98xxat96iws9zmbrgj3a"
      }
    }
  ]
}