{
  "manageEntity": {
    "action": "Save",
    "entityId": "1733373213",
    "entityType": "Track",
    "nonce": "0xe14f6dcfa931bd9a1a225f9bf28b144a1add05bf0f7196fb64b9047ddee8834f",
    "signature": "0x7f9c36ae343d7b976616d801d3f3faa5fbcbae8fb0094da1d16032c7c36382b623f14329885bfde99cb8219a6bc061541f8556ff49e87a71395c1a8937b322bc1b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}