{
  "manageEntity": {
    "action": "Create",
    "entityId": "1248125953",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"fiyuh\",\"entity_id\":438786384,\"track_timestamp_s\":117}}",
    "nonce": "0x3a45740cb1377c890471f70ea3abd6f80ed375e37199b2c0249035a96c2d1f6c",
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    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}