{
  "manageEntity": {
    "action": "Save",
    "entityId": "1952643836",
    "entityType": "Track",
    "nonce": "0x17e96d0fb5071f167496c5d27f4f640a4fa2a2f85a1ea45c137216f900827dea",
    "signature": "0xfa3bebf9e21acaad7a864a53e7e67a89e8c9ce2c615579bd06de10c602c9803d30604c2aaf691a56959ecfddcf52175fdc60cc800d42c15a70a961d136a3eeab1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}