Get a single campaign

curl --request GET \
  --url https://campaignservice-staging.withbenji.com/campaigns/{id} \
  --header 'Authorization: Bearer <token>'

{
  "campaign": {
    "id": 1,
    "name": "<string>",
    "description": "<string>",
    "campaign_logo": "<string>",
    "campaign_type": 1,
    "trigger_type": 1,
    "custom_trigger_id": 123,
    "partner_id": 1,
    "merchant_id": 1,
    "partnership_id": 1,
    "is_active": 0,
    "start_date": "2023-11-07T05:31:56Z",
    "end_date": "2023-11-07T05:31:56Z",
    "owner_id": 1,
    "is_template": 0,
    "template_id": 123,
    "total_rewards": 1,
    "actions": [
      {
        "id": null,
        "action_type": 1,
        "partner_id": 2,
        "base_reward": 1
      }
    ],
    "conditions": [
      {
        "id": null,
        "partner_id": 2,
        "campaign_condition_type": 1,
        "condition_value": 1,
        "condition_operator": 1,
        "or_and_operator": 1,
        "condition_attribute": 123
      }
    ],
    "multipliers": [
      {
        "id": null,
        "partner_id": 123,
        "multiplier_attribute_type": 1,
        "multiplier_amount": 1,
        "multiplier_attribute": 2
      }
    ],
    "goals": [
      {
        "id": null,
        "partner_id": 2,
        "goal_type": 1,
        "goal_value": null,
        "goal_operator": 1
      }
    ]
  }
}