{
  "manageEntity": {
    "action": "Save",
    "entityId": "1462011771",
    "entityType": "Track",
    "nonce": "0x6ac2dbc73c0ed5fec11fa864074d1d07bfb66d79f2c10a8afb1f0692f784fcf5",
    "signature": "0x36f684a78935b056fffdd6fbeb756f960e85195ec23abad6253a8a0ee2f7e10f7a5e3d1d890c31688d03f4b80dec36b56d3ff416b91d8785c6fbed7b5738e9001b",
    "signer": "0x4B8960b62360073E2472A74bfbd80138387fE211",
    "userId": "86339"
  }
}