{
  "manageEntity": {
    "action": "Save",
    "entityId": "2111356779",
    "entityType": "Track",
    "nonce": "0xe9ba1a21faeabf4093776f551a8728aef9aecf95680d8d87f81fc6f06006e5a3",
    "signature": "0x86fee93e147c380a96742b81bce67ac1cdb97cfa29ad677e2decaf292c8ed8b4042fceb7df15e03002a0d1ce6e5b7641a8d213acecba7d17b386ad94944c09981b",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}