{
  "manageEntity": {
    "action": "Save",
    "entityId": "1341056516",
    "entityType": "Track",
    "nonce": "0x2b7fd45a4ceac0cc11d602df2c768e56755db98c3b085145c69fcfc42f5a373f",
    "signature": "0x529783f990ef8ee6e59e07f56edab0156468885eee9c6382a1e16c46c16c7034362da4565166c849013ae40d2eada59f6e594a5e1c9057f9dd3bdb29097a702b1b",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}