Create a new credit grant

curl --request POST \
  --url https://eu.sequencehq.com/api/credits \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --data '{
  "sequenceAccountId": "dce9ae85-d8d0-42b4-bcad-f221a64363c6",
  "customerId": "61b083e0-1faa-47ca-9aeb-6205da8f6c47",
  "name": "Onboarding Credits",
  "creditUnitType": "CURRENCY",
  "currency": "GBP",
  "metricId": "f092246c-6b90-4106-bcca-304ccf06bf45",
  "amount": 10,
  "costOfCredit": 10,
  "effectiveDate": "2023-01-01",
  "expiryDate": "2023-01-31",
  "createInvoice": true
}'

{
  "id": "746fc7f2-8098-4fe7-953c-7d51c580a126",
  "sequenceAccountId": "dce9ae85-d8d0-42b4-bcad-f221a64363c6",
  "customerId": "61b083e0-1faa-47ca-9aeb-6205da8f6c47",
  "name": "Onboarding Credits",
  "creditUnitType": "CURRENCY",
  "currency": "GBP",
  "metricId": "f092246c-6b90-4106-bcca-304ccf06bf45",
  "amount": 10,
  "costOfCredit": 10,
  "effectiveDate": "2023-01-01",
  "expiryDate": "2023-01-31",
  "createdAt": "2022-10-07T14:12:08.826121Z",
  "integrationIds": [
    {
      "service": "Xero",
      "id": "74ed2615-4730-49ab-9445-74f31723a206",
      "isPending": false
    }
  ]
}