{
  "manageEntity": {
    "action": "Create",
    "entityId": "843444687",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":1032959127,\"body\":\"real nice\",\"track_timestamp_s\":175}}",
    "nonce": "0xda76c6e88ea9d24031dbe159e75ffe73497b4076316883a4d902ca91e0d7f5b7",
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    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
  }
}