OpportunityTierCreateRequest

{
    "name": "Premium Tier",
    "description": "Premium tier with enhanced features and priority placement",
    "opportunityId": "550e8400-e29b-41d4-a716-446655440000",
    "targetBudget": 15000,
    "targetBrandsCount": 2,
    "cost": 2500,
    "maxParticipants": 5,
    "meta": {
        "testFlag": true,
        "priority": "high"
    }
}