{
  "manageEntity": {
    "action": "Save",
    "entityId": "317341",
    "entityType": "Track",
    "nonce": "0x15ccf547e8001ce8a34471fbf1ec1e44cc10d817ca6d0cee2e02ec7cd2251c8e",
    "signature": "0x8fda9ee8c9bd510d2d16c0a1bd762c62b3690d1430c7a3267633d79c46b947c31f1997e6f2b3eb117cb62fa88ea56d5e58335e7340f6976097b237a7050959481b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}