{
  "manageEntity": {
    "action": "Save",
    "entityId": "1439332163",
    "entityType": "Track",
    "nonce": "0xe23eae22938af3d7b5f52c196bb0df3342e9b537a74f5a8e9ef7a01a2715125b",
    "signature": "0x33f470a6f29f83dee6bbac23175ecc730bdc7a39fd6a629230244ed1c1364f85031efe7e9a044cef9d89a4adcb0bff15cb9af982bc7b770326b497188ba370261b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}