curl --request GET \
  --url https://tonapi.io/v2/staking/nominator/{account_id}/pools

{
  "pools": [
    {
      "pool": "EQBI-wGVp_x0VFEjd7m9cEUD3tJ_bnxMSp0Tb9qz757ATEAM",
      "amount": 10050000000000,
      "pending_deposit": 500000000000,
      "pending_withdraw": 500000000000,
      "ready_withdraw": 500000000000
    }
  ]
}

{
  "error": "<string>",
  "error_code": 123
}