{
  "manageEntity": {
    "action": "Save",
    "entityId": "831101",
    "entityType": "Track",
    "nonce": "0x7ef03a9caa52949a6ba5f00707f3b6ae73281b809628bc342b6ab912b1fc676e",
    "signature": "0x42f5da915e3d72a5afb07e0959d606aadb34f1a53989be4c2bec9eec4eda0874272ba5936de17561bb57e066887fc8236768ed73e10395a357e6ec887c07aaac1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}