{
  "manageEntity": {
    "action": "Save",
    "entityId": "1081758927",
    "entityType": "Track",
    "nonce": "0xd0574c004b8b350e74df8bcf5c8447e4c89747e9d5b394805e3d29b26702bcf2",
    "signature": "0x81ae7ae66948fd3b976570d0d7ca841fc1ec6d6e9a4501211635e53c98bd95f54fd440a6132ff1f57cbadf32ea62a357a1e634ad7f0d7ad31ff323110a9b3c541b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}