{
  "manageEntity": {
    "action": "Create",
    "entityId": "1893359481",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"access_authorities\":[\"0x8E6a0C5e8c93775D1F70Ac5591514A5E00BaC7f5\"],\"data\":{\"title\":\"Goodbye Manchester   yourstruly\",\"genre\":\"Electronic\",\"track_cid\":\"baeaaaiqsedfmc7sogckjuyolkbzfkcp5q4jydrrepqhnvttvyasoh5qmvxvkm\",\"access_authorities\":[\"0x8E6a0C5e8c93775D1F70Ac5591514A5E00BaC7f5\"],\"duration\":283,\"orig_file_cid\":\"baeaaaiqsedybgi2syc63hwzb6ullnguwvvnd7kkxszgms6jrdtindssxed5ha\",\"orig_filename\":\"Goodbye Manchester - yourstruly.mp3\",\"owner_id\":277537585}}",
    "nonce": "0x8cd8fb5bf8ee237ac7a1d178d5b16882667fd5d1b2965d35cd699ef9eb324d31",
    "signature": "0xd7cfd9859c158ef4ea33ac155ec8b722ca2ac67b50b510532a79e48d7b62f9ee3dfadc775e44a7e723b0ec259e855d5cf10fccdb145e8db97d82c16126cf12ee1b",
    "signer": "0x8E6a0C5e8c93775D1F70Ac5591514A5E00BaC7f5",
    "userId": "277537585"
  }
}