array 1
[{"id": 1,
  "name": "paul"
 },
{"id": 2,
  "name": "sarah"
 }
]

array 2
[{"id": 1,
  "email": "p@test.co.uk"
 },
{"id": 2,
  "email": "s@test.co.uk"
 }
]

output
[{"id": 1,
  "name": "paul",
  "email": "p@test.co.uk"
 },
{"id": 2,
  "name": "sarah",
  "email": "s@test.co.uk"
 }
]