{
  "manageEntity": {
    "action": "Save",
    "entityId": "562972081",
    "entityType": "Track",
    "nonce": "0xfedc9ae60a90994cbfe1263138f72502b59d9c76bf90a8538595e74c19d68815",
    "signature": "0x82ef99200ad2b687cc1fc7e5acf3553dfe36cdd6a3f54f060a102293724a9be370a3264b9b76e0da17c01c2b22ac53c7830e862bae767de536553968aa998e281b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}