{
  "manageEntity": {
    "action": "Save",
    "entityId": "406105",
    "entityType": "Track",
    "nonce": "0x4ee84204d0601017ab4155a5a5361a60ad0cc2f2d24cbcedf73a061daa4c5b3b",
    "signature": "0xdbe13617086cea91b06b1c4c282d202a7545708cb3536f664d858e9c0c1bb99b5000eb9bd58066650a292bcac8a2c6bf0093b2a26f4ca62b6de99cd6c3ad0eca1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}