{
  "manageEntity": {
    "action": "Create",
    "entityId": "676361694",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"Hollow Grey\",\"duration\":387,\"genre\":\"Metal\",\"mood\":\"Brooding\",\"orig_file_cid\":\"baeaaaiqsednrnyvflln7ufuxsi4lvkloaentmryhqrwbm6dygzdwujf3iwy24\",\"orig_filename\":\"06-hollow-grey.mp3\",\"owner_id\":850116073,\"tags\":\"brevos,dragon-slayer,metal,post-rock,rock\",\"title\":\"Hollow Grey\",\"track_cid\":\"baeaaaiqsecx35rc42c2kw63t2gigi5mdarverx43tmzmemaztgjtbl5jqu4ia\"}}",
    "nonce": "1792419613763837227",
    "signature": "0xa1e67872dd098109da43bdd9171a36c15a4cd857303b1c7040c10c4cde502dc5387237732c73d0b5febbc5be481373a9cceb8aaff321a9c6992fabadb3660c031c",
    "signer": "0x7d853670b15a2150BFfd80b516C26EEd400f695a",
    "userId": "850116073"
  }
}