{
  "manageEntity": {
    "action": "Create",
    "entityId": "1408851475",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"@iLLPeTiLL those toms are wickdd!\",\"entity_id\":1500190172,\"mentions\":[707937],\"parent_id\":2012667302,\"parent_comment_id\":2012667302,\"track_timestamp_s\":120}}",
    "nonce": "0xd06e9e70ca481d2bef2d3b56c952846fb65189d114344b1b31301c728af28afa",
    "signature": "0xc2a5997eb5b19b669cfbc63a1ba636600a6d888c09945b0d8d6e17fcd96d8c422388ec91e1709f0cc8a040860960c5e79ce6fab980cfb17777f84656a980e1d01c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}