{
  "manageEntity": {
    "action": "Save",
    "entityId": "706217683",
    "entityType": "Track",
    "nonce": "0xc0718918d8e7532a85a7f0bbb0d8b57402d44b1c73c59283524fa7ee701b4b1c",
    "signature": "0x6f761b9c5afbffa0f65b6d765a25305b0a1b9aca02340e6406f98dd228b50fe924f6e4f57ab9bcbd808ed95ca9e676eb88aab5a9b2d6c824e91eddc8371d99791c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}