{
  "manageEntity": {
    "action": "Create",
    "entityId": "63578558",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Sick!\",\"entity_id\":949696234,\"track_timestamp_s\":224}}",
    "nonce": "0xdeb3c8b761c04df8516ad34471bf557ea657286f94f67aede1f342e116a9a2d6",
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    "userId": "392153838"
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}