{
  "manageEntity": {
    "action": "Save",
    "entityId": "1224683991",
    "entityType": "Track",
    "nonce": "0x3f3b2a9b1032ba0f54e6b6362584322b982948f54ae92e9b0885657a7bb66cf7",
    "signature": "0x340112db112e548bd099ed7c3ad3e3ff4adfcae04e087845dab57c7af54c9e8b30c93d063cd2d80da5366a5fa0d7bcaebedb3e06ca16a71718c403bf62ccaf2b1b",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}