{
  "manageEntity": {
    "action": "Create",
    "entityId": "274927733",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":1230095873,\"body\":\"so good\",\"track_timestamp_s\":54}}",
    "nonce": "0x50032109d7494cbab289ec2c1b83e30c17f1a479c9751df2c21e3008482f8618",
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    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
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}