curl --request POST \
  --url https://api.smokeball.com/matters \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json-patch+json' \
  --header 'x-api-key: <api-key>' \
  --data '{
  "externalSystemId": "EXT01",
  "number": "FUS-124",
  "matterTypeId": "009f778f-83df-454a-b344-768a862a7e55",
  "clientIds": [
    "832e778f-83df-454a-b344-768a862a7e67"
  ],
  "otherSideIds": [
    "776e778f-83df-454a-b344-768a862a6e58"
  ],
  "branchId": "dd4e4381-b6a0-4c64-8feb-e8ea8016ea42",
  "branchProviderId": "Smokeball",
  "clientRole": "Buyer",
  "otherSideRole": "Seller",
  "description": "This is a brief description for the matter",
  "status": "Open",
  "openedDate": "2022-04-23T14:00:00Z",
  "closedDate": "2022-04-23T14:00:00Z",
  "leadOpenedDate": "2022-04-23T14:00:00Z",
  "leadClosedDate": "2022-04-23T14:00:00Z",
  "leadClosedReason": "No longer interested",
  "referralType": "Google",
  "referrerId": "97bbe49f-6460-4bfc-b287-34ddfdbb81ef",
  "referralAgreementFeeType": "<string>",
  "referralAgreementFee": 123,
  "referralAgreementFeeComment": "<string>",
  "personResponsibleStaffId": "c85d28cb-a760-4627-aa59-0a853c2e65ed",
  "personAssistingStaffId": "c85d28cb-a760-4627-aa59-0a853c2e65ed",
  "originatingStaffId": "c85d28cb-a760-4627-aa59-0a853c2e65ed",
  "supervisorStaffId": "c85d28cb-a760-4627-aa59-0a853c2e65ed",
  "clientCode": "Client A",
  "isLead": false
}'

{
  "id": "<string>",
  "href": "<string>",
  "relation": "<string>",
  "method": "GET"
}