{
  "manageEntity": {
    "action": "Save",
    "entityId": "1386456298",
    "entityType": "Track",
    "nonce": "0x8bf2d2d972185d56fef0eeaa31cac32d4b3ab2d561f65ae28bee8d3acbcdfc7e",
    "signature": "0x2dfb08541f7dc6dfbbdd5ee252757980fc32ebf6fe410d8524d18aad21200bb30d383d7fd8eca30b5b33d3c75ee0112db15e6d481e1cf39de342aad7cc4d5b551b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}