{
  "manageEntity": {
    "action": "Save",
    "entityId": "2101525894",
    "entityType": "Track",
    "nonce": "0xcbcb271a71f885fa89082956e435a59794360e93095767f3c661d0e96318f29b",
    "signature": "0x75581b8d33b43aad93ae308cb662853ac54c23ccd4f12386926bd78b6d66bae66bf535504d73cfe93071271bb02237662b54cb68fdbbab30acf8fe2edc11972a1c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}