{
  "manageEntity": {
    "action": "Create",
    "entityId": "528956401",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":342617485,\"body\":\"dope!\",\"track_timestamp_s\":56}}",
    "nonce": "0xa20f81703e09837ff1695bfc55fc28e2a3c2ccd96b5bdc187555c8b25d7efc47",
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    "userId": "52309"
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}