{
  "manageEntity": {
    "action": "Save",
    "entityId": "1170219650",
    "entityType": "Track",
    "nonce": "0x9dc593bdcd97165981e85c0400aa9b24331886e2aa4016ed4981558064c9fb38",
    "signature": "0xc8f924c1604adfa08b412dc76cc9237ec9dedaaa930554bcae8b18353415f9705092ca8b9a4812c4f5670637822ed8e993b5e7d5c99155345f99d1810a412a491b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}