{
  "manageEntity": {
    "action": "Save",
    "entityId": "2088245172",
    "entityType": "Track",
    "nonce": "0x4b442f3d8ca4a6d6a4a646fb3fdb472c74f65860035b5f0a43602c07359f191d",
    "signature": "0xa90117aaa941872fd393d852494d1ff83c7043b584245c08db65574c5557367f77bf9ff4063a80613f33f1543d27e22eb747d5effb2b5caffb6a6643b624ee811b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}