{
  "manageEntity": {
    "action": "Save",
    "entityId": "781602426",
    "entityType": "Track",
    "nonce": "0x1bf6bdbdd2fd7049d698799729fabc8d355a92f92e1da67d20becee96e659547",
    "signature": "0x85ed1747e81f472f815b4325889910d893459aac0e88f2450413d295f34bf40125333b570f97fce798ff57fc2bd7639b6c321c25d2d048e362a379ec3b8ad2951b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}