{
  "manageEntity": {
    "action": "Save",
    "entityId": "1528433024",
    "entityType": "Track",
    "nonce": "0x1f5d86645e0ec8ba0fe3c3cc8850a473c060d28022e439576b152d8f6dc9c94f",
    "signature": "0x9d49797b7f40252dd75fb1b5f71371f6525333900d44594ba9f673aa3fe8914d1dc996b140b6ad56759efc7abeefc6a82ac5e77f8339e4016d036bc9afb00aef1b",
    "signer": "0xd488238DD518d7a02608f058B7393C542822378c",
    "userId": "695852183"
  }
}