curl --request PUT \
  --url https://api.example.com/v1/crm/merchants/{merchantId}/equipment-orders/{equipmentOrderId}/gateway \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "gateways": [],
  "gatewaySetupEmail": "<string>"
}
'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "equipmentOrderId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "gateways": [],
  "gatewaySetupEmail": "<string>"
}