{
  "manageEntity": {
    "action": "Save",
    "entityId": "1180182686",
    "entityType": "Track",
    "nonce": "0xd730db0c43fe6c6c44fdd9d10a8f29839f4f8e0890a597fca8ed63ed40e8690a",
    "signature": "0x628b9b43e2fc7bf8da4b8ef04357512bab78c6674227ba97ddbc9aa0c20a6d676e7095cb2f7fa781589b0adb6e1be1d60ad7b5afcd00b64f32db1dd4a3ae57f11b",
    "signer": "0x4180b0894B640f1045f35c8827F832060C3e080F",
    "userId": "640899544"
  }
}