{
  "manageEntity": {
    "action": "Save",
    "entityId": "1110502394",
    "entityType": "Track",
    "nonce": "0x03917be7a7b28225d2436ff1625e869a931add77e0fb43bb0a0498041482f741",
    "signature": "0x577941599df984572208b1c222a1606e6ddd346fcf7238912b882589f0e0c8ba52a9ce7f6008dc30ec03a79f022c777fd1b1f7fa583d15a637f9472ad9885fd71b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}