{
  "manageEntity": {
    "action": "Save",
    "entityId": "1163860308",
    "entityType": "Track",
    "nonce": "0xbe8b08afcef9f7054e1f701b40a33d384ad3a57d6d111d86591892e1e5557b08",
    "signature": "0x9cde8d54e64bfa579fd87a33df416f4798bf49b44136f1b4fec41bbf06022d071dd24585bc2dbd39b973e42bbbbf06f8cb9bd08eca3e4e27a338c959c3fdb8081b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}