{
  "manageEntity": {
    "action": "Save",
    "entityId": "1299569956",
    "entityType": "Track",
    "nonce": "0xacc33f9a848f2fe3dc9130ac238946b9763c576c9834fa8cbc2f9c5f75717eeb",
    "signature": "0x37042377b5d5caa73bdc93983b9b68eb14a912ea4ec6b3c82f424698d68c97085e535a4a990567735b0a057ddcc8af69d40473d1e29b23ef13d92e4b9ef349a31c",
    "signer": "0x6d94Ff17186121f06D9440fB1ADF9A02CBD31630",
    "userId": "989488626"
  }
}