{
  "manageEntity": {
    "action": "Create",
    "entityId": "868623768",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"body\":\"test\",\"entity_id\":479068059,\"entity_type\":\"Track\",\"track_timestamp_s\":0}}",
    "nonce": "1775543429593268856",
    "signature": "0x60e03406a12742ba5e27d34630bcb4d28224362a76d9153972c15bbd283b89f22eddb6691043fcdc9ba630f863dd4b94545e1dbcc6b790f96c0847bcb06a01ad1b",
    "signer": "0x43e766989e99A80eCF18BF165011e01fbFC3A676",
    "userId": "106879"
  }
}