{
  field: {
    propa: 'valuea',
    propb: {
      propc: 'valueb'
    }
  }
}

// "field"#>>'{propa}' = 'valuea' AND "field"#>>'{propb, propc}' = 'valueb'

{
  field: {
    $contains: {
      company: "Magnafone"
    }
  }
}
// field @> '{"company": "Magnafone"}'