{
  "manageEntity": {
    "action": "Save",
    "entityId": "1160302485",
    "entityType": "Track",
    "nonce": "0xd944c942a3e629df4739a2295ca9f05157e8422e7ce523d5fd4f4d1660192bbb",
    "signature": "0xd29a4e39511f927f68caeecccc4a1649fc4cc200261c70e3919fa3dedf89503049808096d99234ad62fc575d80db3af79dedf63ce75ea8f3590714ed3a98ef431c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}