{
    "type": "object",
    "properties": {
        "at": {
            "type": "string",
            "pattern": "^\\d{4}-[01]\\d-[0-3]\\dT[0-2]\\d:[0-5]\\d:[0-5]\\dZ$"
        },
        "team_id": {
            "type": "integer"
        },
        "contact_id": {
            "type": "integer"
        },
        "contact_phone_number": {
            "type": "string"
        },
        "contact_email": {
            "type": "string"
        },
        "subscription_type": {
            "type": "string"
        },
        "subscription_reason": {
            "type": "string"
        },
        "subscription_previous_reason": {
            "type": "string"
        }
    },
    "required": [
        "at",
        "team_id",
        "contact_id",
        "contact_phone_number",
        "subscription_type",
        "subscription_reason"
    ]
}