{
  "manageEntity": {
    "action": "Save",
    "entityId": "1001498259",
    "entityType": "Track",
    "nonce": "0xe4be5df79962082c02c3bca3bebf7d0514e015791c2a19a3efec30714a3432bd",
    "signature": "0x1a1a1e9933ddc32af484cd8fd48024421bc4ed99a9a2caf3af0eba2b7c70a869255dab5567fedc839103b619bc18037f025d25e308ae9a32e6e49385343c611f1b",
    "signer": "0x3324C23609BC25902C39CFa38CF40581c7Bc7F87",
    "userId": "229134011"
  }
}