{
  "manageEntity": {
    "action": "Save",
    "entityId": "1586121145",
    "entityType": "Track",
    "nonce": "0x8e4796f88279eec042d0a18f6122a5ae436b657968dd6ad521f9adba172796c8",
    "signature": "0x2a9f20d3ed6efdfa012d47e6ccd9563359bd6c7be1358b96edcfa49b56bcd705653b43722e1ba470275beb20edc75e4439f6a74f750a8d4b6ee9ccfa306947e41b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}