mutation SetPrimaryContactPhoneNumber($input: SetPrimaryContactPhoneNumberInput!) {
  setPrimaryContactPhoneNumber(input: $input) {
    id
    value
    label
    primary
    contact {
      id
      firstName
      lastName
      email
      phoneNumber
      contactSince
    }
  }
}

{
  "input": {
    "recordId": "id"
  }
}

{
  "data": {
    "setPrimaryContactPhoneNumber": {
      "id": "id",
      "value": "string",
      "label": "string",
      "primary": true,
      "contact": {
        "id": "id",
        "firstName": "string",
        "lastName": "string",
        "email": "string",
        "phoneNumber": "string",
        "contactSince": "value"
      }
    }
  }
}