{
  "manageEntity": {
    "action": "Save",
    "entityId": "1781836915",
    "entityType": "Track",
    "nonce": "0xcd8eeb6c18fdf33679fe90e50b2f34bef32cd27cc73999fe5553b93319fac733",
    "signature": "0x633701f05533971a08d40d61c1ac62babe717977054373c6fc8c4cb67224e66b0ccc559a35b9b13923225841b132ac4a1d2422b3ff8dfbfd4fded413f73b32b31b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}