{
  "manageEntity": {
    "action": "Create",
    "entityId": "1957075875",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1957075875,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Drum \u0026 Bass\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"title\":\"PART TWO BETTER MASTER\",\"duration\":2606,\"audio_upload_id\":\"82dde4eca743e70624c67c473de0e1a5\",\"track_cid\":\"baeaaaiqseavl4puykkpu5akdw3pfjjqj7uco7dryehrpz3hnvtrv7ipltphng\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsedpdt5yccfltw45byqvpn464ian53jq3vcdkw4xok2vr4bwhin5x4\",\"orig_filename\":\"test 200 th .mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":87,\"is_custom_bpm\":false,\"musical_key\":\"D minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":373173,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebuoi7mitlwdefzakhyouhkv2mqhwerq4ds7sxqyzizpvspl2dr3q\"}}",
    "nonce": "0x40504b3beef3287e2baceab8c12033b8ae5e51f5800678266c4b6944820064f0",
    "signature": "0x46b2cc6a40dd18c2a30a309104e76b4c2eba99f8b3bcd5550bbba66ea4b8cab30faf1c9cf59872b323359bb39a44d85149b8bf5d4a47307170582e90b16ac7091b",
    "signer": "0x2CdceEeabf6dc8403D306e7C20eD1Bc4F95f13cE",
    "userId": "373173"
  }
}