{
  "manageEntity": {
    "action": "Save",
    "entityId": "2059465068",
    "entityType": "Track",
    "nonce": "0x0cc404ac81537131b4cb11655817227624506993aa48705ac43ab547d21aff7d",
    "signature": "0xb9437fd42f12b667385104af95035e5411044e1835b093c7786b251f60ca74a5436e2251a118579e1ffc3a04e2b260127f6cc9e3c096f94cead0834324b4765b1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}