{
  "manageEntity": {
    "action": "Create",
    "entityId": "1281533338",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"killa killa killa\",\"entity_id\":830273275,\"track_timestamp_s\":23}}",
    "nonce": "0x93dd73748e49d4a62c0d42cabf73f12616820afc0306eb05bd260e8b50030cc1",
    "signature": "0xa66e3a75d66ec884d8e678ccdb7b43d08f6d3fd555ff2f40967bfa2557fc286b2c778d07c1da830239cc936d90489d71f39f9df458cfa946ab292c05ed3754861c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}