{
  "manageEntity": {
    "action": "Save",
    "entityId": "107365",
    "entityType": "Track",
    "nonce": "0x1ccaaf406acdcdab46cc52759ab60bf7e40e297df1f1576b0b314cb4a1644fbb",
    "signature": "0x031f93be080dc72f60f9ecf97e729cb669222bca8eca3481a9ed98214da4f05f5d2859ef42919f7fee13dd290a982eb7561c6e240d60aba89ceb052067659c901b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}