{
  "manageEntity": {
    "action": "Save",
    "entityId": "2054328120",
    "entityType": "Track",
    "nonce": "0x82d9b3deb75f3f7f47d8be952986274833a70642f130442874ac19eee0288d5c",
    "signature": "0x3f9b672785291f492db3adcc9e46e20f8a393a6e9fb40a71d04bb4a0da4f6e4836026e871005de989d23d183b4382bdfb862bdee41e32a44cd49d6044feef30c1c",
    "signer": "0x0E71C12c426F5C9206F778713f48B60477CA943b",
    "userId": "29088079"
  }
}