{
  "manageEntity": {
    "action": "Save",
    "entityId": "1436045037",
    "entityType": "Track",
    "nonce": "0x5bdefc036254b37431880d25fe73bef34af19e384795f2c2f9c8c6910bbaefca",
    "signature": "0x4d2abbf4fad1c99889c7ff61b264ab94fea73b92ab3fa06fa7452981ae29c725765cdd639ee0aae1467b392bfab73cd987de51074ec4dfc5931c6f5e50c050551b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}