{
  "manageEntity": {
    "action": "Create",
    "entityId": "1556110802",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"mood\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"stem_of\":{\"category\":\"OTHER\",\"parent_track_id\":727209260},\"title\":\"La canso dels sants-karaoke\",\"duration\":362,\"audio_upload_id\":\"01KQ84A2DH38MFC62R2182M8AB\",\"track_cid\":\"baeaaaiqsedqh7p6szx5g3cqyzdfwhenvosxf7akx37rw6rjnh2dj3k66ogfoq\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsectt4x2tk5mft4sclekjlkqepohiu3txxqz5tvlq4wrqx7yei73om\",\"orig_filename\":\"La canso dels sants-karaoke.mp3\",\"is_downloadable\":true,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":126,\"is_custom_bpm\":false,\"musical_key\":\"B major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":30960623,\"track_segments\":[],\"audio_analysis_error_count\":0}}",
    "nonce": "0x208365edd6fbc80e0bed434dfde616920baa93c7adcccdd906165940300fb4b3",
    "signature": "0xc98551030b59000de3c862299962aba3390afe2cf563a19efcf310d3c4d9c06561ec3a8b460bb231b36dcf1a39e5ee85dfba2746e31d489a89a21deea9c84d091b",
    "signer": "0x072F76AE28884e04201F36f2fBF37260a3DF5c3c",
    "userId": "30960623"
  }
}