{
  "lhv": "lead.state",
  "op": "is equal to",
  "rhv": "TX",
  "rule_set": {
    "op": "and",
    "rules": [
      {
        "lhv": "lead.email",
        "op": "is not blank",
        "rule_set": "<unknown>"
      }
    ]
  }
}