Getting all merchant centre accounts

[Wei Zhong]

Is any way we can get all the MCA ids from a shopping content API endpoint? We need to have all the MCA ids to pull each account status. => "accountstatuses"

We have tried `authinfo`, but it is not always returned with `merchantId`,  or is there any way we can use `aggregatorId` to pull all `merchantId` under it?

```

[

  { aggregatorId: '123' },

  { merchantId: '4343' },

  { merchantId: '4554' },

  { aggregatorId: '234', merchantId: '8676' }

]

```

GET https://shoppingcontent.googleapis.com/content/v2.1/accounts/authinfo

Thanks!