{
  "manageEntity": {
    "action": "Create",
    "entityId": "190265788",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":1012423148,\"body\":\"LFG!!!\",\"track_timestamp_s\":59}}",
    "nonce": "0x0fe2fb3d911ff19eda7d18a91fe60668313e2c51ea2b1a95d96d5ec1dd43964b",
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}