{
  "success": true,
  "sample_data": {
    "SEQN": 12345,
    "RIAGENDR": 1,
    "RIDAGEEX": 600,
    "BMXBMI": 25.5
  },
  "required_fields": [
    "SEQN",
    "RIAGENDR",
    "RIDAGEEX"
  ]
}