{
  "manageEntity": {
    "action": "Create",
    "entityId": "1363026128",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Très belle chanson et l'image est magnifique , bravo\",\"entity_id\":1992141124,\"track_timestamp_s\":308}}",
    "nonce": "0x02a1564a9b1eb52f9674747dc0bce45f4bd6bff22fbf2e2d3c01ed485fe151f2",
    "signature": "0xe22261eadf7cf85798dde21c648a7c10f1638c22bea485e11444f5c84aebecb42adb2e4abeb3ae2e7abffa993128512fe7967840fdfaaee0e6930e4c16eae7291b",
    "signer": "0x0CD8c65F2d0399B442E2f8907f48BC34f1Ee7615",
    "userId": "901822438"
  }
}