{
  "manageEntity": {
    "action": "Create",
    "entityId": "1304484283",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":1230095873,\"body\":\"so good\",\"track_timestamp_s\":54}}",
    "nonce": "0x91855e766417c99c8f259a7d12cffcc63443256b0e350d0318c45f45cab18c83",
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    "userId": "52309"
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}