{
  "manageEntity": {
    "action": "Save",
    "entityId": "1922447354",
    "entityType": "Track",
    "nonce": "0xdf7875f6bdd2cf2345b3c8fae61deeb8bc6b15f4dda7cbad7f7eabf9a850ad43",
    "signature": "0x1b7c95c6b46692f595edb121c9b137c4e3c487b99b0fe2bd3191291eee7a129e1c79542d4b55ce4f8cb5ef8633ec5a42730e26589ae47946b701864f917e670d1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}