{
  "manageEntity": {
    "action": "Save",
    "entityId": "962594136",
    "entityType": "Track",
    "nonce": "0xc10c9c19b330d5f5ff70688116a25c76a01fe29276650d3679ff9c030cbab7f8",
    "signature": "0x09bb5adb5275d4e4ad111ba07abd5ca846c5aba0b889180a4fbe2c93e9cc1b2538ecd1aab66fb72ee923e48185b225d40da258386f35f415d7333bb48a7834b91c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}