{
  "manageEntity": {
    "action": "Create",
    "entityId": "425024852",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"title\":\"flutttr-forever.mp3\",\"is_stream_gated\":false,\"is_unlisted\":false,\"field_visibility\":{\"genre\":true,\"mood\":true,\"tags\":true,\"share\":true,\"play_count\":true},\"is_downloadable\":true,\"stem_of\":{\"category\":\"OTHER\",\"parent_track_id\":430216653},\"owner_id\":1197405,\"track_cid\":\"baeaaaiqsebr6plu244dx3grov63cc5m5nrosivn5rmios7n275lyvzmtsg5ae\",\"orig_file_cid\":\"baeaaaiqsedi5ulzytlhzsxwbc3z27wpbblo7t6kwtvguhjoxp3eeb3qv6jasu\",\"orig_filename\":\"flutttr-forever.mp3\",\"audio_upload_id\":\"60772e2725a64f624ad6f11a5f45b418\",\"duration\":141,\"bpm\":140,\"musical_key\":\"A minor\",\"audio_analysis_error_count\":0}}",
    "nonce": "0x8a4a6c30d5111f19e51ca243f63088feef1adec58a4a1d3cb1a78d85be3b2500",
    "signature": "0x987a030127d79121b9bd6172bd2a072bb6848de19c95a66619c580ee1468d11600228b1c56daa8ce8a6b316adce037706147646f809bc513ee486c1ca3a6c1f01c",
    "signer": "0x9743F54B36f8256B8FF02dcE2dDC4Fe5DDD03Bdc",
    "userId": "1197405"
  }
}