{
  "manageEntity": {
    "action": "Save",
    "entityId": "1036240499",
    "entityType": "Track",
    "nonce": "0x54deb04b3c071408883fe71673dd1d13cdcfd2c8ec4a8dc3dd39293f06f5cc4e",
    "signature": "0x2db847fce55e44c4d0bb63641eb56663d081d678808ef58ca23deff98b9615f2471fac28d2351b6ba8fefef07bcd93ab867cc317cde6cab3a33f2394938f013a1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}