{
"manageEntity": {
"action": "Save",
"entityId": "1318450087",
"entityType": "Track",
"nonce": "1786739001485609308",
"signature": "0x84d217b2fe51f3a24fef03ed890db489904c5b63c3fe8f14fc3e5439867c508862067becec800f72799d99eca28c5221162fd0fbac2d32bc1b3322b5915367611c",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}