{
  "manageEntity": {
    "action": "Create",
    "entityId": "1324320247",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"loveeee\",\"entity_id\":674630798,\"track_timestamp_s\":62}}",
    "nonce": "0x974522ba254293b8bdebccca7cd71ae62152a8ee74016132cddc7e3d30b016b5",
    "signature": "0xe50bcdbd762a1e57690275f6f78e859600915cab200c17d13383fd4850903a383d984d96cfaad96bb7bac021b87d24c4c7871dc819069a6a88faa7ec1e944f0e1b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}