{
  "manageEntity": {
    "action": "Save",
    "entityId": "1385116001",
    "entityType": "Track",
    "nonce": "0x335633e4f74ff2155323f01fc5028504ee8baf5f682ebacce40f32081a37f494",
    "signature": "0x73b6f2af6c589501c2513ebb3ab6b8a9e378bf97f87811d745821e20090d336e00cfdb18974b86a385fb767ab7b29058d74e1dfde85e695169c2273485e6f5ab1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}