{
  "manageEntity": {
    "action": "Save",
    "entityId": "1158203596",
    "entityType": "Track",
    "nonce": "0x55c64df171d3851e25b600c1b9c3b61027b1558f046c11977f83cf366ef842a6",
    "signature": "0xccd33a9cf80c4a7f08fc3ad3e7d0daef2833a035b4e0bf2703151175adf66ce673fc363cf079834ead89539e8bbf9368b695d8e2769661bed8d04806a3a99db11b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}