Declines the assignment of a shift

{
    "recruiter": {
        "name": "string",
        "company": "string",
        "email": "user@example.com",
        "phoneNumber": "string"
    },
    "notes": "string",
    "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
    "number": 0,
    "address": {
        "line1": "string",
        "line2": "string",
        "city": "string",
        "state": "string",
        "zip": "string"
    },
    "schedule": {
        "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
        "name": "string"
    },
    "scheduleClient": {
        "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
        "name": "string"
    },
    "facility": {
        "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
        "name": "string"
    },
    "unit": {
        "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
        "name": "string"
    },
    "profession": "string",
    "specialty": "string",
    "start": "string",
    "end": "string",
    "periodOfWork": "string",
    "duration": 0,
    "status": {
        "id": 0,
        "name": "string"
    },
    "rateType": "string",
    "rate": {
        "rateType": {
            "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
            "name": "string"
        },
        "isOnCall": true,
        "billRate": 0
    },
    "availableActions": [
        {
            "name": "string",
            "link": "http://example.com",
            "precedence": 0
        }
    ],
    "shiftDetailUrl": "string",
    "candidate": {
        "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
        "name": "string"
    },
    "segment": {
        "id": 0,
        "name": "string"
    },
    "shiftType": {
        "id": 0,
        "name": "string"
    }
}