{
  "manageEntity": {
    "action": "Create",
    "entityId": "477856055",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":477856055,\"description\":\"This is a story about me\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Alternative\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"mood\":\"Defiant\",\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"title\":\"19\",\"duration\":121,\"audio_upload_id\":\"f970d903ea9989643ced2789d17d464e\",\"track_cid\":\"baeaaaiqseay7skmhrk4ivjyy7ff22fwk5dhcqlwo345cidzwelh476jc2l3fc\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsecmiksllnffxahy4yznngmjwqn7ga2oxvl6qigifqjc5kitvjvwqw\",\"orig_filename\":\"19 MASTER.wav\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":119,\"is_custom_bpm\":false,\"musical_key\":\"A flat minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":521933568,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsecb5hwryqmk24x253atf3qvdtiz2htxllmszstyive5653nblscy4\"}}",
    "nonce": "0x8a340e9d01d9a1c567d48a17782d46696cc8732c0563beebd859774ae7520516",
    "signature": "0x0425d48d746e45870ed88f3ea77d660fdecbb754638cd4161a2b840855cf149a574c62ee82721826d5f561e3635f4350e90b2e7fe23c232550eb16b5ce5cff571b",
    "signer": "0x9610CF06778fa8FB1C50073C7e704c6773d0eDE2",
    "userId": "521933568"
  }
}