{
  "manageEntity": {
    "action": "Create",
    "entityId": "1500357113",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"nice song  pal\",\"entity_id\":819850548}}",
    "nonce": "0xce9df84dc4fb5ae56c7c1615fcf6587beb3770419e17e89aa6a4baeb12db4371",
    "signature": "0x5208485293e617e96a7ab57abbf2625d1e80ad434a8e1cd2c9a416de122ff0c607f492fa33575e4ef386eaf4b5c1d1b4fb3ace579294ea427b8c6696c428720c1b",
    "signer": "0x775bA7FB8a4FF9354c099465ca493BA949FdAca6",
    "userId": "597677270"
  }
}