{
  "manageEntity": {
    "action": "Save",
    "entityId": "2114538526",
    "entityType": "Track",
    "nonce": "0x1d3e9318d9cf71f98cc1dff92d8ca328f9a6708f5d1f73d22d1179ceeadcba25",
    "signature": "0xe65b0b4d0d1960771d623471025375a50be4c4590ffaa0f9cd831913cf1de4964e2501826ac95cda57968da7f7196fd730de59369e4beadfe133f270dbbbba441b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}