{
  "manageEntity": {
    "action": "Save",
    "entityId": "636171608",
    "entityType": "Track",
    "nonce": "0xdfdea0f199dcde39f463878c85eb4aeb58df33aac4ed03f2de051a8138f0dd99",
    "signature": "0x12ff321b068e568c7df7058efd69b0d60bd35e8817af0aaf6501ffcf922f2d7b052d564f0e58a80c0fe383a147456b435596b38b163a6ddda7b5bd4ee2bee7361b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}