{
  "manageEntity": {
    "action": "Save",
    "entityId": "55726",
    "entityType": "Track",
    "nonce": "0x0bde7f2cf7ef1ef51c9c49046a1dea041232c6769c5349cad0cccf65fe4d001c",
    "signature": "0x7e3fbd4a6d3c4529ace03d1c47913c3fe121b2c10abe12c9f59b9515f02e9254545b0e773481ae5c5e35c896b331bede1af5c7d9e3817ac616e3460367c5178e1b",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}