{
  "manageEntity": {
    "action": "Save",
    "entityId": "271470707",
    "entityType": "Track",
    "nonce": "0x0955f8ff9ade1a22b67191148ef706d733e49a9d68828d92114f574ec20a86ab",
    "signature": "0x9425b6bce3d7239989ce28817097de24245ca0c72e57e632231973cd67d1069f5d6d62b505ea6525b5e33df2c7b2d7f002694f02755048366e50e2aa59e0651c1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}