{
  "manageEntity": {
    "action": "Save",
    "entityId": "2132194076",
    "entityType": "Track",
    "nonce": "0x8f34b19f2fd8e79cc8e73a76882653613fbaa91fee18e681a5804e337f2fc56e",
    "signature": "0xf6798b092f322984268976b8cd62a30b0ed2de0656733926617b520f6372478531beeeb3792d985bb91616cfe3db4ae26b889cc31f1e35863bb1b5926f27f33c1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}