{
  "manageEntity": {
    "action": "Save",
    "entityId": "626663",
    "entityType": "Track",
    "nonce": "0xdda1e50603e4c593816c85704e9149962b86f22cb21cd8824e64f86563707018",
    "signature": "0x027150e55c5288a1208e0c1eded34c9ac7d0cb81edbc3ed1e8aa90c54607327c1b2e6d4390bc04f1efed62c09354aaa206c6d792ef9c97ec80570a588707dea31b",
    "signer": "0x428df7C89b250770b2C984e1AFc3524CfB11738c",
    "userId": "410571818"
  }
}