mutation UpsertTenantField($input: UpsertTenantFieldInput!) {
  upsertTenantField(input: $input) {
    tenantField {
      id
      source
      externalFieldId
      value {
        __typename
        ... on TenantFieldStringValue {
          __typename
        }
      }
      createdAt {
        unixTimestamp
        iso8601
      }
      createdBy {
        __typename
        ... on UserActor {
          __typename
        }
      }
    }
    result
    error {
      message
      type
      code
      fields {
        field
        message
        type
      }
    }
  }
}

{
  "input": {
    "tenantFieldIdentifier": {
      "tenantId": "id",
      "externalFieldId": "id"
    },
    "type": "STRING_TYPE"
  }
}

{
  "data": {
    "upsertTenantField": {
      "tenantField": {
        "id": "id",
        "source": "string",
        "externalFieldId": "id",
        "value": {
          "__typename": "TenantFieldStringValue"
        },
        "createdAt": {
          "unixTimestamp": "string",
          "iso8601": "string"
        },
        "createdBy": {
          "__typename": "UserActor"
        }
      },
      "result": "UPDATED",
      "error": {
        "message": "string",
        "type": "VALIDATION",
        "code": "string",
        "fields": [
          {
            "field": "string",
            "message": "string",
            "type": "VALIDATION"
          }
        ]
      }
    }
  }
}