{
  "manageEntity": {
    "action": "Save",
    "entityId": "943696605",
    "entityType": "Track",
    "nonce": "0xfbbb195fd5b23dfd9a63ae93d3bc88a4bcf0fdff4a9b5a3accee433c8ed7ce8e",
    "signature": "0x2e90ac28029bdae6d5f5237c99bbf3b0ec859aff2dfb7d4299158a63afd7fbd02e71577715380f59af82cc6ef602e2db714c3e654a601c9000c8f7768fa7b7d71c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}