{
  "manageEntity": {
    "action": "Save",
    "entityId": "85909090",
    "entityType": "Track",
    "nonce": "0xaba2d6afa610a63c24e931cb4f94c0c60f936a9230bea04c7b389c99f781cd2a",
    "signature": "0xaeaf8ac09e4c5a622edfc7cb04064a83b4b326dc0abf95edc53d9b5224277e2a18bf8f6d9eb3ee3e6b782295fc9122d70e4745e381dafc619ebc2a72ef3b9d5c1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}