{
  "manageEntity": {
    "action": "Save",
    "entityId": "1122429",
    "entityType": "Track",
    "nonce": "0x2dd3dd3bac6fab21fdd517e527372f2974be96d2d413828dedc38bf5147d200f",
    "signature": "0x16882e9ced74e4154a346832f2506374c85cade5cd1f6adfce4a85b57e9ed7f958d4a6ec89dc65a25106c3f057611c4aabc21af5c0c22b6b429662c19cbc4de21c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}