{
  "manageEntity": {
    "action": "Save",
    "entityId": "1317369952",
    "entityType": "Track",
    "nonce": "0x236d62ff8b8cc56684515b62ee778caf8439ef7f6fd0453b94100774e78cd54c",
    "signature": "0x4d776a7002d2e3ff7cac7b4d1d3e4276189ddd15b1c8a676a2b1bbb7357b48105ff93ce68a5afcd2b5c324792924b9a44547fddcbc239405ac7b472910bd6ca11c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}