{
  "manageEntity": {
    "action": "Save",
    "entityId": "1288554094",
    "entityType": "Track",
    "nonce": "0x04fb9b1185ade6f068f0eac6b18e0047b907400106ee8dac4362d6b6ab7d85f3",
    "signature": "0x8bd6b5106647e2574f1145bc0e49e2f56bfb7e70c910f63875fcc92c11b75531398542ca6f367f7d7b0585707729fb86a2627963e67833c324aa07ae7ef741421b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}