{
  "manageEntity": {
    "action": "Save",
    "entityId": "2068758856",
    "entityType": "Track",
    "nonce": "0xc198a548c31c00307e936952251b0b0fdb0dab3c33e24696e1b4b6f07a1448b9",
    "signature": "0x4d028fbd3e3268618f4805e1099c61b6efa7d6e961d8a2963cd8168dede014f222124a66a7fb2655fd8dc3c3afee5517c2e76d7b5181064530927fead34df4791b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}