{
  "manageEntity": {
    "action": "Save",
    "entityId": "1028614",
    "entityType": "Track",
    "nonce": "0x377114f16699176aece5b2467164741c337d49e2d358c628331991fc2c2f9de5",
    "signature": "0x58b4c80e4c7939f6c033a6e05917c3be9c5dc5d7af50a4c6106e40ece658b3655993cd4d6828e8b21782b21aad3e69f95e786fb989b31ef29c2eb5364d8352821c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}