{
  "manageEntity": {
    "action": "Save",
    "entityId": "2056222826",
    "entityType": "Track",
    "nonce": "0xafd5a29c4a43598b8b6da6d1375a29519ecb00aad3f5cdb602583538e72a0b2c",
    "signature": "0x235bc2d163b78b8911556c16034fd2671134ba5bc122811fb48bdad51a3992bc3f918223935e44e87ce8e7050197ab9fffab8e5397c2dcd719572dc0a50550e31b",
    "signer": "0x879AB09f06df488AF471eeBA6489678312560024",
    "userId": "903958768"
  }
}