{
  "manageEntity": {
    "action": "Save",
    "entityId": "1554672578",
    "entityType": "Track",
    "nonce": "0xd7eb6f85175630097a4804f1f28a05d09c6f906d58dd2c8bb59ec15aeea0af37",
    "signature": "0x31aa67cf6b8a893a30f9e341b94261595aee6df5810ec302fb0cf973b21c9a5840706e4ce78008dbedb55f1006bd86738bc387ceda9e05e8eb5b5dc14d62781d1b",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}