{
  "manageEntity": {
    "action": "Create",
    "entityId": "217610497",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Wow powerful \",\"entity_id\":940390884,\"track_timestamp_s\":23}}",
    "nonce": "0x6f7ed3ac763b38dbe00c00bc95a6eada77a6fed07827599f53c7da39a03a30c6",
    "signature": "0xe20440a857ddad9327dc2cd9b67707df8633d6fb5b3f3384c17e72d4af80df1d62412416215759a43b92ef318f039e7368ee6c820def3f2d5e10746552880a281b",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}