{
  "manageEntity": {
    "action": "Save",
    "entityId": "635108",
    "entityType": "Track",
    "nonce": "0x1035eaf8137383d9f4b999f210509397746dfc969c5c403c0ed1add86fa041ca",
    "signature": "0x1c2786aa55f1d82bb7405efe71b10600d9268498077ab2bb8f1eedc3344da0346a940854e8f9440a5724696fbde8e20e732ef7998364527100db9a255568fa201c",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}