{
  "manageEntity": {
    "action": "Create",
    "entityId": "1186979339",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":715505662,\"body\":\"WOOHOOO!!\",\"track_timestamp_s\":748}}",
    "nonce": "0xf4b3c4f86de75c245b8a2e1b18b9620e257d21323be66af4404b5fedc6ee7ba7",
    "signature": "0x90a684ef05961dd8876b7adbceb07f23550d708b0ceb32f38960401bc61bb5497dbc54a800bb5b51b77b38e5f449d82ac51df8c1ac4784c9ae131a96dacecdfa1b",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
  }
}