{
  "manageEntity": {
    "action": "Save",
    "entityId": "1085955405",
    "entityType": "Track",
    "nonce": "0xd6bb8de6f9d854367885e0a82c74d3d9bcac25c25f5bf58a099344e75b9ebf22",
    "signature": "0x350d981c3a17dae21e9d238f6c1c4848ff67ecc38180e2b0b42108b3fd529f5e1c89a89a37271fd23badccfbcee78d834f950fe9dac95db4c28b6e34f79d3e011b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}