Open the caller's current account

{  "id": "550e8400-e29b-41d4-a716-446655440000",  "resource_id": "acc_2n1t201rmv87aae5j4csam8000",  "account_number": "00123455",  "user_id": "660e8400-e29b-41d4-a716-446655440111",  "external_account_number": "1234567890",  "external_account_id": "1234567890",  "external_provider": "CHOICE",  "wallet_onboarding_status": "ACCOUNT_OPENED",  "wallet_onboarding_rejection_reasons": [],  "onboarding_status": "ACTIVE",  "onboarding_rejection_reasons": [],  "activatable": false,  "type": "CURRENT",  "account_id": "550e8400-e29b-41d4-a716-446655440000",  "available_balance": 1000000,  "balance": {    "total_balance": 1500000,    "hold_amount": -500000,    "available_balance": 1000000  },  "currency": "KES",  "status": "ACTIVE",  "limits": {    "minimum_transfer_amount": 1000,    "maximum_transfer_amount": 10000000,    "daily_transfer_limit": 50000000  },  "interest": {    "deposit": {      "annual_rate_basis_points": 300,      "payout_frequency": "WEEKLY"    }  },  "created_at": "2025-09-01T10:15:30Z",  "updated_at": "2025-10-15T14:22:00Z"}

{  "code": "BAD_REQUEST",  "description": "Bad Request"}

{  "code": "UNAUTHORISED",  "description": "Unauthorised"}

{  "code": "WAITING_LIST",  "description": "User is in the waiting list"}

{  "code": "TOO_MANY_REQUESTS",  "description": "Too Many Requests"}

{  "code": "INTERNAL_SERVER_ERROR",  "description": "Internal Server Error"}