{
  "manageEntity": {
    "action": "Create",
    "entityId": "498744543",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"access_authorities\":null,\"data\":{\"track_id\":498744543,\"title\":\"34b6e0c3b8785775642a13a0e4dde77c\",\"genre\":\"Electronic\",\"is_unlisted\":true,\"is_downloadable\":false,\"is_original_available\":false,\"comments_disabled\":true,\"access_authorities\":null,\"field_visibility\":{\"genre\":false,\"mood\":false,\"tags\":false,\"share\":false,\"play_count\":false,\"remixes\":false},\"owner_id\":715160400,\"track_cid\":\"baeaaaiqsebhv2cr5ae2icom4rkn7hzf7kdcjx6qe3fl336v2aqsqeac3ghvkc\",\"orig_file_cid\":\"baeaaaiqsedrbirwixmua37vu6xaxpnodwl35rz2hfusdsdx5ch6mvejuq2q54\",\"orig_filename\":\"8c1b0813abff287ef30e81030ea463fe.wav\",\"audio_upload_id\":\"b86d9a72c0dd302bb1dd495c0a1e8087\",\"duration\":384,\"cover_art_sizes\":\"baeaaaiqseckn6stwrn7ha7xirdd4eh57dpoyft2gyuvwckom6lbgfg7iqrqem\"}}",
    "nonce": "0x61593c751d53fcc37c798878c74557e7f27cfe1da8c2f8f6e7bc49e67b9e3108",
    "signature": "0x003994cba5c1a4fc124c71ef240bf6d659b530eefea00a178caad200b46bfaf976ff5be106889b02ab3a057cc20bfee3bb637b36e5ae7e06d12b4fcbee5028d11c",
    "signer": "0x98F4295af45c93F3802F70FC0811654a74df1e73",
    "userId": "715160400"
  }
}