{
  "manageEntity": {
    "action": "Save",
    "entityId": "1270067727",
    "entityType": "Track",
    "nonce": "0xc946e38762610c90a75824bb4124780071394b9a5c2ac4b73d886221616d2f6d",
    "signature": "0x1f7adc16f1b9407afa05e280b558cbfd10cc16b476edbf57f7ade10370a66a942c167bd04ad7be7c86e7913e66a8b8c907dce1916c51caad9a3204d214bb81541b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}