{
  "manageEntity": {
    "action": "Save",
    "entityId": "794228575",
    "entityType": "Track",
    "nonce": "0x5d8343c677b2fa9d76f5b4ce74eb55d6dece023f8c8828361dd2de18c2b0964a",
    "signature": "0xa711a2edbf3b98c54ec3f0ad4a65ddc39def866b130152f1daebd134f5a957645f1e8bebaa9e38a98bd534a507325e68eb694885e97f2f87767a9185715fc9371b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}