{
  "manageEntity": {
    "action": "Create",
    "entityId": "1838442474",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Great song I loved !!\",\"entity_id\":996287752,\"track_timestamp_s\":83}}",
    "nonce": "0x8d8d709fecd185c651038b96ad24a1604d285ec36557f2adab46eab5b77e56e6",
    "signature": "0x634a64b2cba8b2148ea6f75bdf23824d08b50b95c80539bff092bf48455e0ce74e06a7919ddbc96743c6536234211430a47905cc57877f2ab256b8ab1cef17d51c",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}