Create a new Customer Alias

curl --request POST \
  --url https://dev.seqhq.io/api/customer-aliases \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --data '{
  "customerId": "01849e70-703e-705a-b59a-d3fd575587e0",
  "deletedAt": "2022-10-01T00:00:00Z",
  "sequenceAccountId": "ec1479a2-6ba1-421f-a7de-0853a20d17a1",
  "value": "external-customer-alias-123"
}'

{
  "createdAt": "2022-10-01T00:00:00Z",
  "customerId": "01849e70-703e-705a-b59a-d3fd575587e0",
  "deletedAt": "2022-10-01T00:00:00Z",
  "id": "01849e70-0a0f-72ca-ba07-5557dd734d43",
  "sequenceAccountId": "ec1479a2-6ba1-421f-a7de-0853a20d17a1",
  "value": "external-customer-alias-123"
}