[BUG] can't transfer nft by json

{
    "type": 4,
    "version": 2,
    "assetId": "A5KuNxNiFWk7yYkh5VzWM5doveh9DVjR3wAokNP3qH5s",
    "recipient": "3XrUtvRZ6LLU8F2wwkuDffwTuLUNcpnjthB",
    "amount": 1,
    "attachment": "",
    "fee": 2000000,
    "feeAssetId": null
}


this json gives insufficient funds, shouldnt be the case.
Investigation is needed.