{
  "manageEntity": {
    "action": "Save",
    "entityId": "135122782",
    "entityType": "Track",
    "nonce": "0xdbccfed031fad8b4ae943a98fd11eca7921df7933c781cd7189258b6e8b7a35c",
    "signature": "0xb185ab261327a0391f5f509978ccd6b8304d310dad0065d6b61b35e1a63a957616b39741ebe292ae43c7d827dbb98009b6927521d82f4738d1b2ac5474403b351b",
    "signer": "0x730D61884359389d8aA22afeF2b83FF4F7c9ee63",
    "userId": "342017819"
  }
}