{
  "manageEntity": {
    "action": "Create",
    "entityId": "1235117400",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"GRITTTTY\",\"entity_id\":1231277835,\"track_timestamp_s\":61}}",
    "nonce": "0x0c5c4c94c785bc01573c9e0d9f769b3802965249f1aa82930a545f4439fc11a7",
    "signature": "0xa351ec69d142a91c95243e8b6e3664337871c2741ab4c1cedfe9cd573e523fb03ac288945e281b2778da04b138dbcfe53db6e6cf0307b840045c6c895977d85f1b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}