{
  "manageEntity": {
    "action": "Save",
    "entityId": "2027037451",
    "entityType": "Track",
    "nonce": "0x35b0cd0bfcdf085afc2cb196f2c423951e27c6f7f578bf003e7d49fcc548b396",
    "signature": "0xb1ecb9e69ce8385dcc073600d2e250f6d3189dbba6e2de534ef75b937af0f8046b43fea7bac933d25178faf068e4aadceeef76ed190897e8431bc5cf5829c5751c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}