{
  "manageEntity": {
    "action": "Save",
    "entityId": "1075795774",
    "entityType": "Track",
    "nonce": "0x6b9ce165699a29414c2673eb3167ab02189f31f503c15027e9b56abddcfb8d0c",
    "signature": "0x471bb36b62a65a138150e299362a55c8c832c2d7792854f8a9deddb3fae130d408648de11fd9a1cb82e3e2366f54d25e8c499d7746115481267598280846d5391b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}