{
  "manageEntity": {
    "action": "Create",
    "entityId": "198116069",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":258424531,\"body\":\"test numeric ids\",\"track_timestamp_s\":10}}",
    "nonce": "0xe0c0b8783b3ef3e4b7fb736aef826ac31554ba190b80677e1014c811a6e47a79",
    "signature": "0xc23ed09cf3e31e2c7b4aee376b4e17aa42bf1bfc564c5a7193348801ccaf21365ffb1adb11bb663b960bd9eb332e4b9579d90de7bde57e694e2fed5edf5df3081c",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
  }
}