{
  "manageEntity": {
    "action": "Save",
    "entityId": "117815936",
    "entityType": "Track",
    "nonce": "0x87c8a7fff011d7e4e24cf60eeec0eafe316e5590c0d7a49c56947044b149c245",
    "signature": "0x9009ad454da6d95452008ee9a5db8d57ad1ff00dd70bfed3b29cb229398f7c9b69a0eb5bd7aee43628b10288ca5da8926acfe40153fdac38ef5a5ae3f14157191c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}