curl --request DELETE \
  --url https://admin.snagsolutions.io/api/loyalty/multipliers \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "externalIdentifier": "<string>"
}
'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "userId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "websiteId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "organizationId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "multiplier": 500.005,
  "title": "<string>",
  "description": "<string>",
  "externalIdentifier": "<string>",
  "createdAt": "<string>",
  "updatedAt": "<string>",
  "deletedAt": "<string>",
  "user": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "walletAddress": "<string>"
  },
  "loyaltyRuleId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}