{
"manageEntity": {
"action": "Save",
"entityId": "1933604765",
"entityType": "Track",
"nonce": "0x4edd26bea643fe297848947f5b35d56db93016ad72ece9c86620ab4cf7cde35a",
"signature": "0xd0571429a7059ede703212a60eb7318bc46e9345b5a941fa80207057548ef26147fe343a77128fb96947520fd089ac652b66b3ead58eed684b39fec09cb425481c",
"signer": "0x12705C8Fe8CE886CeFEFa0d4d46E906f2c35C954",
"userId": "477934274"
}
}