[
 { "guid": "guid-1",  "ml_category": "investor",  "control_number": "ML 13-005517", "key_accounts": ["Merrill Lynch"]},
 { "guid": "guid-2",  "ml_category": "broker_dealer",  "control_number": "ML 13-005518", "key_accounts": ["Merrill Lynch"]},
 { "guid": "guid-3",  "ml_category": "retirement",  "control_number": "ML 13-005519", "key_accounts": ["Merrill Lynch"]}
]