{
  "manageEntity": {
    "action": "Save",
    "entityId": "1795548502",
    "entityType": "Track",
    "nonce": "0x600e36c9188973b4cbdf78849d03f2c70020bcba29298de4fa2003a468422f05",
    "signature": "0xd2531bd11082d38610c4b4224d51df67d2aacb70f7700f223d7ba56659df0617475f54380717b9d37686c6202cd8a3e6f45fef06f2b935f104c9bc3ea7a812b11b",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}