{
  "manageEntity": {
    "action": "Save",
    "entityId": "483713069",
    "entityType": "Track",
    "nonce": "0x04522d66576c336e362d0547769f0dc6e305d5d287fd471ae74f0486423046ff",
    "signature": "0xc596e3c4e98f28adc8da4852fe5f29387ef378553023bdac25fb53b2adaf16750040c4d2e9c8318e8e652cdddc7006c9854978454a3cbe1b51d59f4f5b8db1791c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}