{
  "manageEntity": {
    "action": "Save",
    "entityId": "1163860308",
    "entityType": "Track",
    "nonce": "0xd1718ee0f58af19c4ff82f7ef120658b67dc759227dae25a5044f2c0e6808981",
    "signature": "0x3c0f22d7eafeaa215d525610ffc23ccf073aa3a51a8dded67c7191ef80f2033100b6460868c0fea13166020632afb0e930345fc1686fe4a4caa4bccbab40aa551c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}