{
  "manageEntity": {
    "action": "Create",
    "entityId": "1550100909",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":758330642,\"body\":\"such a banger!\",\"track_timestamp_s\":49}}",
    "nonce": "0x738811fc298d7dc8c0c079ee8a6bc5c19c2c3945641b2db1bc23b2891b98e067",
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}