How do I add a new Address

I don't really see an actual Addresses endpoint so I was attempting to use CsAddress:
POSTing the following to /api/CsAddress:

{
    "$type": "Asi.Soa.Core.DataContracts.GenericEntityData, Asi.Contracts",
    "EntityTypeName": "CsAddress",
    "PrimaryParentEntityTypeName": "Party",
    "PrimaryParentIdentity": {
        "$type": "Asi.Soa.Core.DataContracts.IdentityData, Asi.Contracts",
        "EntityTypeName": "Party",
        "IdentityElements": {
            "$type": "System.Collections.ObjectModel.Collection`1[[System.String, mscorlib]], mscorlib",
            "$values": [
                "CONTACT_ID_HERE"
            ]
        }
    },
    "Properties": {
        "$type": "Asi.Soa.Core.DataContracts.GenericPropertyDataCollection, Asi.Contracts",
        "$values": [
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "Address1",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "Address2",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "Address3",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "BadAddress",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "BarCode",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "City",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "Country",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "County",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "CRRT",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "Email",
                "Value": "[email protected]"
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "Fax",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "FullAddress",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "MailCode",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "Phone",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "AddressPurpose",
                "Value": "Reception"
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "StateHouse",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "StateProvince",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "StateSenate",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "UsCongress",
                "Value": ""
            },
            {
                "$type": "Asi.Soa.Core.DataContracts.GenericPropertyData, Asi.Contracts",
                "Name": "Zip",
                "Value": ""
            }
        ]
    }
}

Results in:

{
    "$type": "Asi.Soa.Core.DataContracts.ValidationResultsData, Asi.Contracts",
    "Errors": {
        "$type": "Asi.Soa.Core.DataContracts.ValidationResultDataCollection, Asi.Contracts",
        "$values": [
            {
                "$type": "Asi.Soa.Core.DataContracts.ValidationResultData, Asi.Contracts",
                "Message": "  \r\nCsAddress constraint violations:\r\n  PropertyName=Address1; Message=Required Field - Address1; Severity=Error\r\n  PropertyName=Address2; Message=Required Field - Address2; Severity=Error\r\n  PropertyName=Address3; Message=Required Field - Address3; Severity=Error\r\n  PropertyName=BadAddress; Message=Required Field - BadAddress; Severity=Error\r\n  PropertyName=BarCode; Message=Required Field - BarCode; Severity=Error\r\n  PropertyName=City; Message=Required Field - City; Severity=Error\r\n  PropertyName=Country; Message=Required Field - Country; Severity=Error\r\n  PropertyName=County; Message=Required Field - County; Severity=Error\r\n  PropertyName=CRRT; Message=Required Field - CRRT; Severity=Error\r\n  PropertyName=Fax; Message=Required Field - Fax; Severity=Error\r\n  PropertyName=FullAddress; Message=Required Field - FullAddress; Severity=Error\r\n  PropertyName=ID; Message=Required Field - ID; Severity=Error\r\n  PropertyName=MailCode; Message=Required Field - MailCode; Severity=Error\r\n  PropertyName=Phone; Message=Required Field - Phone; Severity=Error\r\n  PropertyName=StateHouse; Message=Required Field - StateHouse; Severity=Error\r\n  PropertyName=StateProvince; Message=Required Field - StateProvince; Severity=Error\r\n  PropertyName=StateSenate; Message=Required Field - StateSenate; Severity=Error\r\n  PropertyName=UsCongress; Message=Required Field - UsCongress; Severity=Error\r\n  PropertyName=Zip; Message=Required Field - Zip; Severity=Error\r\n"
            }
        ]
    },
    "Warnings": {
        "$type": "Asi.Soa.Core.DataContracts.ValidationResultDataCollection, Asi.Contracts",
        "$values": []
    }
}

I clearly have those properties in the body, so I'm not sure why I'm getting those validation errors.
Additionally, is there an easier way to go about this?