{
  "manageEntity": {
    "action": "Create",
    "entityId": "858295666",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":236984910,\"body\":\"cool\",\"track_timestamp_s\":30}}",
    "nonce": "0xef95e7319959ce331ffdef0d77d85684b0cadf3a9ab090a355846101514cba6f",
    "signature": "0xac01fe016e5a92b2656295f08ecb5834dd50c0c65716de3836151f1f63a62cce2575017b8c35b975e46bc631c92ea8cbfcd8d71596b2c7950d6df3e55b7f2b731c",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
  }
}