{
  "manageEntity": {
    "action": "Save",
    "entityId": "351793735",
    "entityType": "Track",
    "nonce": "0x6e26fccef74928fc486e3fc08353e3426ebcbd74a5a111df9150e6d859c40672",
    "signature": "0x854ad42726db675b9d076cb9f5ceadbaa1cef2ac3487c45ac5da1b63ad40caae38853dd15722e73839b80c626b9b4707fb42a7b84c5da5b2be0bd27ac4678db41c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}