{
  "manageEntity": {
    "action": "Save",
    "entityId": "2040976889",
    "entityType": "Track",
    "nonce": "0x586213e5cfcc656a00109ff902ec291a342f3b0f6f61407a1d3dc5f0df093dc0",
    "signature": "0x934fac864634329af994599d3b6ec1e02b25b80488533d1d9ba8b5ec02157afd1c69aface62e7e11da0d8c9ab7cc4922b897ff400a4658664bed89fe58098de11c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}