{
  "manageEntity": {
    "action": "Create",
    "entityId": "22968447",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"title\":\"04 70s Analog Lead.wav\",\"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\":\"MELODIC_LEAD\",\"parent_track_id\":1913430723},\"owner_id\":362018966,\"track_cid\":\"baeaaaiqsebcuhqtkwf4pqmd35agjnvnlyrspuy6dncqdhy5hao2zhzvdfgd3g\",\"orig_file_cid\":\"baeaaaiqsea4n6kby2qsp5nkmpp3uolnw5we3fvlmgpzupfebat6smno4lqdh4\",\"orig_filename\":\"04 70s Analog Lead.wav\",\"audio_upload_id\":\"a11ae072f9bc6ef54e0488d85ff8e7fe\",\"duration\":101,\"bpm\":115,\"musical_key\":\"B flat minor\",\"audio_analysis_error_count\":0}}",
    "nonce": "0xdfb4ada744addca433144e2496df58e99aebf406e98fc502459825eba60ddde0",
    "signature": "0x8cb36820f82baf7298777686e2c3153bae6cfbaee1830f757dc17839ef8c603f3b7c7c3a6fbf23aa3d4769230f2ccebbf4d94fdd673001f85966f6d6356601da1c",
    "signer": "0x53dC09835BD2744d082224C0f3479C0FB3DFDc81",
    "userId": "362018966"
  }
}