{
  "manageEntity": {
    "action": "Create",
    "entityId": "1612095561",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"sick yooo\",\"entity_id\":1143587920,\"track_timestamp_s\":40}}",
    "nonce": "0x68bbecd5bd4a54bc75f169c5f84b3e1f3be4ac4fad50eaf0f28776a365f5d5a6",
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    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
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}