{
  "manageEntity": {
    "action": "Create",
    "entityId": "942113898",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":1536128984,\"body\":\"YESSSS!!\",\"track_timestamp_s\":69}}",
    "nonce": "0x08c295be87459ec256039c9fa485de4470e4132c9120727911538768502c78e0",
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    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
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}