{
  "manageEntity": {
    "action": "Save",
    "entityId": "2114632892",
    "entityType": "Track",
    "nonce": "0xf115409aa1139d112ad63c7c89b7d1ac4ec8e5ade6573f3566676cdc0a8584a7",
    "signature": "0x8f63c5ef6dfe9957429bb28e748b865fcdf58226c75c63a58378e4d07892bb2b4897323a8305fb1e3ef9544c90fbd3180bd68f56e09cb87fb303287aa945a58c1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}