Retrieves an existing client.
{
"id": "5eb04fcd0f3e360008035eb1",
"type": "person",
"email": "john.doe@example.com",
"mobile": "+12 345678910",
"telephone": "+12 345678910",
"joinedDate": "2020-01-01",
"personDetails": {
"firstName": "John",
"lastName": "Doe",
"dob": "1990-01-01",
"nationality": "GB"
},
"createdAt": "2020-01-04T17:24:29.146Z",
"updatedAt": "2020-01-04T17:24:29.146Z"
}
{
"type": "resource_not_found",
"message": "Invalid client id '5eb04fcd0f3e360008035eb2'"
}