{
  "manageEntity": {
    "action": "Save",
    "entityId": "1933876678",
    "entityType": "Track",
    "nonce": "0xf3d80ce0454eebc0e81181d818b81fca6a040d191013b11a9301d3333ec09d68",
    "signature": "0x820a852052adf3b29e6e593ff3fdfe66af4dfc9dcd25a17da66815504d9732410f176bfc5f00f976e383b6525e0495fd636317a69c0b3dac4076db833a53c9cb1b",
    "signer": "0xEbf223E3bfE29c251Ee19f0d3515DDDA00B0Ad60",
    "userId": "2018345"
  }
}