{
  "manageEntity": {
    "action": "Save",
    "entityId": "1128744230",
    "entityType": "Track",
    "nonce": "0x5c22afab827ac360cfde91da16f0cf422f3de70905ff1da5823ce085b1a14bd0",
    "signature": "0xb643615127c1e92cce9cfc183f41f99ee72a77a27dab45a3b7d692c1dfc9b8c3452b732ebaa6472fc2d096f101c7870bb926d31a0bbb0e7cc07b0e4e629897fd1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}