{
  "manageEntity": {
    "action": "Save",
    "entityId": "171335106",
    "entityType": "Track",
    "nonce": "0x38218bbb34c3c72f8894626e0aafc1f1201ddea05d96e2d1d8c85864c5ae4d72",
    "signature": "0x3a49e06c7d5bdf5c5bf86b043c72bd736bf1ceea043f90c581bf4f79def58fb172a2c6390139a8b8a1cf76110959c76bfdd283451b1191b36fcbbc007f11cbb51b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}