{
  "manageEntity": {
    "action": "Create",
    "entityId": "383659355",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Sick yo!\",\"entity_id\":1406981176,\"track_timestamp_s\":48}}",
    "nonce": "0x73622515a3ac57d2aab9f549063ce6aa665701107d6863f252b8c7215bb59d4d",
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    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
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}