{
  "manageEntity": {
    "action": "Save",
    "entityId": "859779598",
    "entityType": "Track",
    "nonce": "0x2daab1e73b1963fac287d13e7eb8de72c2eeadfd4a4b0b890c10b6c995e54af0",
    "signature": "0x226ec845c6b27f8bb9383f518bae7a87a8ae612cc60a9d637867292456fa63563b90dad6ab94318063ddbe570bed49a0d3a8dce9f9dbb6b518f14d11504afa101c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}