{
"manageEntity": {
"action": "Save",
"entityId": "229962167",
"entityType": "Track",
"nonce": "0xacbd9f3a24252af953b3ef42f845a7ee991e6baa2b7531f30b547cb0fa555680",
"signature": "0x14d87499e6e7da2023a40c93eaf99b00a5dc469525a314f84fb09f8cf86822882aeb5da22c910232f92854d6b818ff3aa39a03ff93f360cc442b74cd58204be41c",
"signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
"userId": "386745392"
}
}