{
  "manageEntity": {
    "action": "Create",
    "entityId": "1719122592",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":20,\"entity_id\":1836429617,\"body\":\"sick!\",\"track_timestamp_s\":62}}",
    "nonce": "0xc81b825e8c3a54bd8460042d1347213abac47dda013c3b1cd51b3e2d04ead931",
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    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
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  }
}