{
  "manageEntity": {
    "action": "Save",
    "entityId": "1098425609",
    "entityType": "Track",
    "nonce": "0x2ae414bf0881ca3b2c4ad8179c2eb492caa72c263a3efa43c69f1abbfa80c201",
    "signature": "0x82f28c603a0a58646ff3daa7dec51e8555704cd2235de8562674104428a646db24573cf5698eef49f83f92fd21b0d3e46b16864b0fdb3c1b969085c5dd87bceb1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}