{
  "manageEntity": {
    "action": "Save",
    "entityId": "1836560013",
    "entityType": "Track",
    "nonce": "0x64ffa68083b5381fbc6db2a090ecf13a209ce657254c832d925323a463c9479c",
    "signature": "0x77a373252aa573c247294a284a614ad0d3415743588f46a40bc9c7c3fa4fd87159c71b9eb1cf326659a1f55f479c1de4b1fd07f08c3db17aa3c4c1a61110e9321c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}