{
  "manageEntity": {
    "action": "Save",
    "entityId": "862292875",
    "entityType": "Track",
    "nonce": "0x85c75783e74163933468fa60397fcce0e1814f2f714e483a46a5825cfc299a1b",
    "signature": "0xa8a586a03f67a435819b4a83cae31ebeb09c73eb9d0d1884d581028c4e201b82124f9fdcdbd5a6bb5b7e5bb08e71b1d03d3a39e6c11c850f6882edb733344b311b",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}