{
  "manageEntity": {
    "action": "Save",
    "entityId": "1161374767",
    "entityType": "Track",
    "nonce": "0x882d2050530ab279fc630e3a6834139ba96083188dd67bbd7a66492ee0e62459",
    "signature": "0x9491513cf02cd32b323b2ab1992b7ab7e8a41134000807accfcde15aa16552a21ae8c9f5cb19b17567c92ce692556918e2f3ed27c7bf2426c5f0959be42567181c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}