{
  "manageEntity": {
    "action": "Create",
    "entityId": "1287152291",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":20,\"entity_id\":41198571,\"body\":\"flyyy\",\"comment_id\":1287152291,\"track_timestamp_s\":86,\"mentions\":[]}}",
    "nonce": "0xca47e15b008e19036d2deb94a7f3c14f160a3b1359bd4f48eeb2165f9e70bf70",
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    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}