{
  "manageEntity": {
    "action": "Create",
    "entityId": "1218618603",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"HEATERRRR\",\"entity_id\":1564443616,\"track_timestamp_s\":35}}",
    "nonce": "0x6e2f0553855a3c82c09058b0bd949424e292f22c9e44d984a2dd9367cf5d384f",
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    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
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}