{
  "manageEntity": {
    "action": "Save",
    "entityId": "1252259310",
    "entityType": "Track",
    "nonce": "0xdec33534909491000f694855b6f6031d6bee3a2b32801f7a9d275a52a5d547c2",
    "signature": "0x1df968f751e49fa4520671c3b868aa399cf6a315224ec5c1cf816095d1f56de56f1766e89fb87a9d61d0311b1b0949f3d5954dd4f9caf1c2acde4d90798e01221b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}