{
  "manageEntity": {
    "action": "Save",
    "entityId": "1058078",
    "entityType": "Track",
    "nonce": "0xc7fb140d9eb2ba4cd717e78b3ee48e195d19e40a93f192205a1f1734549c0b46",
    "signature": "0x409207329bf6fb9508708ab8a3c927573a338bc2e4fbe97a107261a13562622808f7c4a6695c5d8136e441b28bb90c55ed7b12644b538a486e22cbb1bebed5991c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}