{
  "manageEntity": {
    "action": "Save",
    "entityId": "577788577",
    "entityType": "Track",
    "nonce": "0x067ab6f11e8248522ca742a70f8095be3443634d8e39ca1cea82d4bb9ca4c81f",
    "signature": "0x9eb50163b6a04ff45143ef7cc0591c27bb2d1df158a08985df18fb9a47786e044ebd21d7542e244a9683df0686c5e302176ac0f14670b1d60ab6d5470b8727621b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}