{
  "manageEntity": {
    "action": "Save",
    "entityId": "922291713",
    "entityType": "Track",
    "nonce": "0x3025db7e83b82a9f0185c45c05500701f8c927fde3de8950b814dd93f72dd491",
    "signature": "0x0df757eaff70f27daa029c1b6c5d5ccf14fe695ec5daf8d598c296ac651634101ff2ee1a31c8cd912ebd0c5c1e2036e135e15217ccbd657970bb175bd607625f1b",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}