{
  "manageEntity": {
    "action": "Save",
    "entityId": "180857",
    "entityType": "Track",
    "nonce": "0x2705d73a243c89151872c067b59ca14bac16829f11cb56d5e6c85010e67e469b",
    "signature": "0xcdc5f3a38f685efb482243e77f304eabc1d7421209931db5a71d5f482e79d56b20fb85cfebff4c6ff3942fbb8bcecc3d53304d58e6082a617008b60f522850dd1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}