{
  "manageEntity": {
    "action": "Save",
    "entityId": "11330778",
    "entityType": "Track",
    "nonce": "0x675d3706fb673b0e854733b7cc2d4db9f4886a856f420811f9f11de52a6f00c5",
    "signature": "0x82503e45d726036cc5af581e341bb0b611158e2a9b0c578503e4393ec6cb365e19f5676b214e04168f4759570ca714e33a072a476bbdd3f8d42b6f0d176f248d1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}