CustomerDetailResponse.kt

data class CustomerDetailResponse(
        @SerializedName("data") val data: CustomerDetail,
        @SerializedName("success") val success: Boolean = false,
        @SerializedName("errors") val errors: List<Error>?)

data class CustomerDetail(
        @SerializedName("first_name") val firstName: String,
        @SerializedName("last_name") val lastName: String,
        @SerializedName("email") val email: String,
        @SerializedName("phone_number") val phoneNumber: Int)