The ID of the program membership.
curl -L \ --url '/v2/admin/program-memberships/{program_membership_id}/program-and-tier-rewards' \ --header 'X-API-Key: YOUR_API_KEY'
{ "rewards": { "reward_uuid": "text", "type": "tier", "image_url": "text", "name": "text", "limit": 1, "interval": 1, "last_redeemed_at": "text" } }