{
  "manageEntity": {
    "action": "Save",
    "entityId": "1280636253",
    "entityType": "Track",
    "nonce": "0x0ff212909c002554b30c77259a00cf8238b1dd99bf0ca13cea2d4ccf5c5bdf93",
    "signature": "0x0013fcd619fd4b66cfd366760094993c9aecfb39e11069677808d70e4c26fba35da66110bcd893018d45685ca1861e84d878710b4b4631fc224ffc596a2e9f1c1b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}