{
  "manageEntity": {
    "action": "Save",
    "entityId": "1092973840",
    "entityType": "Track",
    "nonce": "0xbec83f354b09927a657ffc7b61d4e32ec28f47f4360d7307700783bc83d173fe",
    "signature": "0xf2010e9efed06caa1b268b79e791942b736ada57646c327f2f4c965c27fe776c1849d55a1be59b85ca0bcf623d78ecd3f33fbdfe071622f75caf53385445dc9c1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}