{
  "manageEntity": {
    "action": "Create",
    "entityId": "453902246",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":453902246,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Electronic\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Temple of Acid\",\"duration\":13861,\"audio_upload_id\":\"bffa2fee77891d8706a7ef7c9f70408b\",\"track_cid\":\"baeaaaiqsebaqjfkeyrboegjxyw2cfbiifwqiylrlqfn6z2v2iqsgnpkipe7ze\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsecyay2l3fjp5cggw5b5zjxim46ld7gxqpr3xqkuhu6itpuoudsb3i\",\"orig_filename\":\"DJ_Amoureux_-_Temple_of_Acid.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":145,\"is_custom_bpm\":false,\"musical_key\":\"B flat minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":100027732,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebv722lap3fbln4op5ogpswxsn32gwsamheszhurxbfekcy3meey2\"}}",
    "nonce": "0x7f5dee630e9f40c7b77208046a129a7efcce97f009010279aea5a3058dbdcee1",
    "signature": "0x1a4b11e9c5ba4339114334c745aecd19b48e27fde7fd690057de5d06f29ca0e93ba23a96866f4dbb4a5521152a3da46b5e68a750d5cefd02a792e4b3395455681c",
    "signer": "0x7D86D15B8eCca91f3Fcfa84CE8a06ff8D0049255",
    "userId": "100027732"
  }
}