{
  "manageEntity": {
    "action": "Create",
    "entityId": "892572960",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"\",\"entity_id\":627752314,\"track_timestamp_s\":14}}",
    "nonce": "0x54fab5e1ea6f12ed2fc50ce98293533b5ce59d0d606eb7fb4b60e7376bdd0f14",
    "signature": "0x2f7c0105f51fb5f8c223600092988a6b8138384bb34970ecf80142c9f20fc21959796f55a803c44d46866cccb9166324f04bcbcd1f459d680fc4a307095d52ee1b",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}