{
  "manageEntity": {
    "action": "Save",
    "entityId": "2028593188",
    "entityType": "Track",
    "nonce": "0xc68d026d2bdc677c5cc5f40e2d479a96006288cf10c9f2d332c1f59de4f5bd78",
    "signature": "0xbfdbcfd729aad0dc198a500727f2cda61814c5d699e3261fca2607f52f2c7bc36c55cf3244b4c8e8d289f5d77b864efec69dd9ca5f8e045b0bf9d3de162287021c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}