{
  "manageEntity": {
    "action": "Save",
    "entityId": "1324052989",
    "entityType": "Track",
    "nonce": "0xba34ac8a07f93b2525420cdaeaa4e3e1a55bd0b2bf955ae41ebe69c82dc4f46b",
    "signature": "0x8b48cd1fc01406818104771625215c9c5f7f41d2901325223397ae4a4c13463a7b3af2e926df3b5fcac69c6271a81a24e6f3676b1f70fd62c630189307071ce11c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}