updateAccount

mutation UpdateAccount($input: UpdateAccountInput!) {
  updateAccount(input: $input) {
    success
    errors
    clientMutationId
  }
}

{
  "input": {
    "email": "<your-value>",
    "firstName": "<your-value>",
    "lastName": "<your-value>",
    "phoneNumber": "<your-value>",
    "acceptsMarketing": true,
    "language": "en",
    "metadata": {},
    "clientMutationId": "<your-value>"
  }
}

{
  "data": {
    "updateAccount": {
      "success": true,
      "errors": null,
      "clientMutationId": "<your-value>"
    }
  }
}