{
  "manageEntity": {
    "action": "Save",
    "entityId": "1076719180",
    "entityType": "Track",
    "nonce": "0xe62e5ebc2d077f67497283a090c17f99d37188f24c3b37773d7bfb589dd24b06",
    "signature": "0xe9290e2d838b9e3d5546dbc24259b326b0906836b759b836e419f2bb02a55ad4480bfb4eab0fb668660168f81d88417289e76493629fc24be37a7c80ab1e45001b",
    "signer": "0x28945B345Dc8334c21B4e932dA506ca6Fac7e18a",
    "userId": "290283513"
  }
}