{
  "manageEntity": {
    "action": "Save",
    "entityId": "12093",
    "entityType": "Track",
    "nonce": "0x234d9895c4a168076eb8710791ac3e10990bf1d357d4bd462849e182675dd4a8",
    "signature": "0x0463a06534c18a5d57e9c5b7ebd582829b348f69e8af4d4bdf7e5049553e388c28939ab108b25aa8a9fc1f678f9bdb8dbe32c6b7f264399d7522a255f0ae55a41c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}