{
  "manageEntity": {
    "action": "Create",
    "entityId": "1978475803",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"access_authorities\":[\"0x8E6a0C5e8c93775D1F70Ac5591514A5E00BaC7f5\"],\"data\":{\"title\":\"Hazy Mornings\",\"genre\":\"Electronic\",\"track_cid\":\"baeaaaiqsebvfii56njru6phqjd32hy5h6lpmo3jbzzjdr7uwc6icurbmkq6po\",\"access_authorities\":[\"0x8E6a0C5e8c93775D1F70Ac5591514A5E00BaC7f5\"],\"duration\":183,\"orig_file_cid\":\"baeaaaiqseahkn6a4j75c6p56kv5uxnwlnb5u2eujupwyk7xdw4zvhytuihasa\",\"orig_filename\":\"Hazy Mornings.wav\",\"owner_id\":472933117}}",
    "nonce": "0x49a07a1f72fb3f97094a959bb149f0ad89fd712e676057213f347eb854549c13",
    "signature": "0xbce803a4e7a34424216fc0beb0f8f09889b30d39f30598ae5e03f30ccec8279a43bdbdc6093ff3c151dc2be295e15315fc4c7edb035be9ec3bcdc7a8cc84b8ce1c",
    "signer": "0x8E6a0C5e8c93775D1F70Ac5591514A5E00BaC7f5",
    "userId": "472933117"
  }
}