{
  "manageEntity": {
    "action": "Create",
    "entityId": "1276722160",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"soooo fresh\",\"entity_id\":55919435,\"track_timestamp_s\":36}}",
    "nonce": "0x5885cebcc6b8f42f77198c5f8ffce1b2195d5f034e7d61b6d1e37d45abb5e554",
    "signature": "0xa3163a1663ddf38279d8b2bd2190dd18c7ac5344a75a1fb843befe7ed66cf9ec0d363f05bc501437e122addb4bcdab2ac98582f4d841c6123ccf075d30a4369f1c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}