{
  "manageEntity": {
    "action": "Create",
    "entityId": "91866938",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"Generada por Diapasón: composición dirigida por tensión, orquestada y rendida sin intervención manual.\",\"duration\":151,\"genre\":\"Classical\",\"is_unlisted\":true,\"orig_file_cid\":\"baeaaaiqsedmmc2ayephweocvw32jm56ywyqu6xctkalp2rpfzzbsditcvfb6u\",\"orig_filename\":\"20260915-212335-nostalgia-s142525.mp3\",\"owner_id\":1421026,\"title\":\"Sin remite\",\"track_cid\":\"baeaaaiqsedfy6fbb42vqbs5cqpvw2cqr5gqyd75j2pqs3u5uwzbnuv4zadcve\"}}",
    "nonce": "1789500300476101579",
    "signature": "0x6952f91c406209a8194a27506ac1011aa3f284948c2db7b525c5ac078c551c372cec63110ab44a34e6d0a6652cac42be2f753a02c687cd28d1e89aff8749306e1c",
    "signer": "0xeaB6b479B33FEc6303065aeab4C0b6D344f091C6",
    "userId": "1421026"
  }
}