{
  "manageEntity": {
    "action": "Create",
    "entityId": "1441446247",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Sick yo!\",\"entity_id\":1578478252,\"track_timestamp_s\":54}}",
    "nonce": "0xabd95d7ef46d688c069dbc9db5781ba598789decffe8eaba94cc1a813a8101eb",
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    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
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}