{
  "manageEntity": {
    "action": "Save",
    "entityId": "134157",
    "entityType": "Track",
    "nonce": "0x615f2707414d85a834008fda9c00379f24ee877c5b2d98c25290f25fd08e1549",
    "signature": "0x92796335d84aee827165a291d7bd0033006803c825cd6c626b6f728704fea6c806bb543f37c871d6a14aeda12c3289acb22dd4d391e58c50f4394e9f3bbc8b231b",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}