{
  "manageEntity": {
    "action": "Save",
    "entityId": "332282733",
    "entityType": "Track",
    "nonce": "0x27e8846b314ddb04181e9de3303e21a01a7c7cf11e22c5c626acc4a9ee9b42cd",
    "signature": "0x2c5eb296716abb200bd4ae0da7e77190820ab58ab9beea25bb8d3a0b0fcb61704e86a7e0f7c2a9776d0d575d156a85a35b954a63759a51a933ac8e378ad09b361b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}