{
  "manageEntity": {
    "action": "Create",
    "entityId": "1130809918",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Nice\",\"entity_id\":1908355532,\"track_timestamp_s\":0}}",
    "nonce": "0xff9b343318c8d38b8966fc3ab3e64d550d0c2595e0990d8e658d4b606c8added",
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    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
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}