{
  "manageEntity": {
    "action": "Save",
    "entityId": "534255",
    "entityType": "Track",
    "nonce": "0x2f226edb5d95489652ba621fdc09dcf3c32a26794fbaeb593ab781e5ab1d2eca",
    "signature": "0x4f7aa0e41af296c215144320ec244a1b4c964d129c3af86fe32f0d5f7a39c65f5b07e6867088c7d8a263683720f21908e96bcfd09458cd41a0d23dcd904596f01c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}