{
  "manageEntity": {
    "action": "Save",
    "entityId": "1041046459",
    "entityType": "Track",
    "nonce": "0xbacd80def57a14f2bc17c6affceb76d7ecd4ac3ac419cb41b2219afc3de3f00f",
    "signature": "0x4b60080b8f3cd54b15aaab448d88e31d62307f030a4211c92ebd77b2e347af8e57bb1ff13fc7cd6d002606ad4c313c922fe26e9f0b949c064290145e79db392d1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}