Submit tx error by via rpc

I use the v1/transactions/encode_submission to submit tx , the body below

the api : Aptos REST API

{"chain_id":"4","expiration_timestamp_secs":"1663805206","gas_unit_price":"1","max_gas_amount":"50000","payload":{"type":"entry_function_payload","function":"0x1::aptos_coin::transfer","type_arguments":["address","u64"],"arguments":["0x6ac297031be21d7d3b83e53f76aa803016c389cd4bcdd4d0928b7aaa80c6ff83",1000]},"sender":"0x468f5ade8a4cb5e426bad07ad8d808fb067160bc506eab8620520f8a5a4a08c9","sequence_number":"1"} 

but have a error

{"message":"The given transaction is invalid","error_code":"invalid_input","vm_error_code":null}

could you provider a more detail example about submit tx